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1 :01x01 - Thou Shalt Not Kill
Writer: David Wolstencroft
Director: Bharat Nalluri
Guest star: Alexandra Robinson (Sarah Lynott), Lisa Eichhorn (Mary Kane), Adam Kotz (Dr. Mike Lynott), Karen Westwood (Karen Lynott), Esther Hall (Ellie Simm), Lisa Faulkner (Helen), Graeme Mearns (Jed Kelley)
Bombs explode in Liverpool and MI5 investigates. Zoe goes under cover to investigate Mary Kane, a pro-life extremist wanted in the US. Meanwhile, Tom falls for a woman while he is undercover. She only knows him under a fake name.
2 :01x02 - Looking After Our Own
Writer: David Wolstencroft
Director: Bharat Nalluri
Guest star: Graeme Mearns (Jed Kelley), Lisa Faulkner (Helen), Esther Hall (Ellie Simm), Debra Stephenson (Claire Osborne), Kevin McNally (Robert Osborne)
Helen, a new member of MI5, goes undercover on her first mission as Tom's wife. They are investigating a wave of killings that might link to Robert Osborune. Osborune is suspected of attempting to start a race war in the UK.
Zoe was originally part of the team, as Tom's wife, but was pulled for another assignment with the customs agency. Time being of importance, Helen is sent in Zoe's place. Helen is supposed to be working as the administrative assistant, not a spy. Will she do well on her first assignment?
3 :01x03 - One Last Dance
Writer: Simon Mirren
Director: Rob Bailey
Guest star: Graeme Mearns (Jed Kelley), Karzan Krekar (Serka), Katie Jones (Feyla Ahmed), Ralph Ineson (Sam Walker), Oliver Haden (Sonay Alkan), Ray Panthaki (Chalak Bakuri), Christopher Fulford (Johnny Marks)
Zoe attends a reception at the Turkish consulate. Unfortunately, the reception is interrupted by terrorists, who take everyone hostage. It appears that the group is mostly composed of Kurds who dislike the way they are treated in Turkey. While Tom and Danny try to help Zoe, Tessa spots an old "friend" on the video feed. A friend that used to be an agent, and is supposed to be dead.
4 :01x04 - Traitor's Gate
Writer: Howard Brenton
Director: Rob Bailey
Guest star: Graeme Mearns (Jed Kelley), Jules Werner (Istvan Vogel), Esther Hall (Ellie Simm), Bronwen Bonner-Davies (Andrea), Hugh Laurie (Jools Sivitar), Anthony Stewart Head (Peter Salter)
President Bush is making a visit and his life might be in trouble. MI5 and MI6 are worried about an extremist group might be targeting Bush.
Also in trouble is Tom and Ellie's relationship. Ellie still doesn't know that Tom is a spy, or even what his real name is, and that gun shot wound certainly is suspicious.
Danny and Zoe are sent to watch an anti-Bush demonstration, and spot an MI5 agent in the crowd. They don't know why Peter Salter is there, or really what to do.
While all of this is going on, Zoe runs into Tessa and uncovers potentially damaging information on Tessa's loyalties.
5 :01x05 - The Rose Bed Memoirs
Writer: Howard Brenton
Director: Andy Wilson
Guest star: Graeme Mearns (Jed Kelley), Tim Pigott-Smith (Hampton Wilder), David Calder (Sergei Lermov), Nicholas Farrell (Richard Maynard), Esther Hall (Ellie Simm), Hugh Laurie (Jools Siviter)
Ex-MP Hampton Wilder is out of prison and the memoirs he wrote while in prison is on everyone’s minds. Wilder was in prison for embezzlement, but was also involved in illegal arms dealing. His memoirs finger his replacement in that arms dealing scheme, who just happens to be a high-level government employee (Richard Maynard). Wilder no longer wishes to publish the memoirs and informs the MI5. Danny and Tom search the prison but can’t find the book. If it gets out the government apparently could fall.
6 :01x06 - The Lesser of Two Evils
Writer: Howard Brenton
Director: Andy Wilson
Guest star: Henry Goodman (MI5 Director General), Lorcan Cranitch (Patrick McCann), Esther Hall (Ellie Simm)
An old enemy of Harry Pearce's from Northern Ireland, Patrick McCann, walks into a safe-house and lets it be known that he has important information about non-Irish terrorists planning an attack. Pearce very much distrusts McCann and wants him killed. The rest of the team, though, try to use McCann's information to stop the terrorist attack.
7 :02x01 - Legitimate Targets
Writer: David Wolstencroft
Director: Bharat Nalluri
Guest star: Karel Roden (Gradic), Heather Cave (Maisie), Benedict Cumberbatch (Jim North), Emma Barton (MI5 Officer 2), Graham Christopher (George), Alistair Parker (First Policeman), Nikolai Claus (Mugger Kid), Natasha Milkovich (Rado's Colleague), Martin Cole (SAS Officer), William Buckhurst (Bomb Disposal Guy), Dragan Micanovic (Rado), Esther Hall (Ellie Simm), Rad Lazar (Gradic Henchman 1), Lorcan Cranitch (Patrick McCann), Rebecca Johnson (Trendy Civil Servant), Teresa Churcher (Sarah), Ben Fox (MI5 Officer 1)
Tom Quinn's girlfriend and her daughter are trapped in Quinn's house. Apparently, MI5 takes strong measures to try to protect their agents, including creating protections for their dwellings. Unfortunately, the protections created an unexpected problem. Ellie & Maisie Simm are trapped inside with a ticking time-bomb and Tom is stuck outside with no way to get in.
Similar bombs turn up elsewhere, including in the car of the Secretary of State for Northern Ireland, and at a top secret military base. Apparently, at least one of these bombs was set by Serbian terrorist Miroslav Gradic.
MI5 tries to get to Gradic through Rado, who is a film buff. Zoe goes undercover at Rado's favorite video store. MI5 learns that Gradic is targeting the upcoming secret COBRA meeting that includes all the military leaders in the UK.
8 :02x02 - The Nest of Angels
Writer: Howard Brenton
Director: Bharat Nalluri
Guest star: Rez Kempton (First Man), Simon Snashall (CID Officer), Praveen Sond (Aminah), Taahir Husain (Abu Hassah), Gary Bakewell (Uniformed PC), Kammy Darweish (Mr. Hussain), Lucy O'Connell (Doctor), Sam Bond (Vinny), Roshan Seth (Fazul Azzam), San Shella (Johnny Patel), Alexander Siddig (Muhammed Ibhn Khaldun), Qarie Marshall (Mohammed Rachid)
MI5 investigate a Birmingham mosque that they believe has been taken over by extremists lead by Mohammed Rachid. A young agent is sent in and he learns that the group has gathered a "nest of angels" made up of young men that will be sent on suicide missions. That agent, though, had is cover blown, so MI5 need to find someone else to infiltrate the group.
Algerian agent (ex?) Ibhn Khaldun turns up, and while MI5 do not completely trust him, they send him in as their agent. After receiving no word from Khaldun, MI5 begins to suspect that they have been betrayed.
9 :02x03 - Spiders
Writer: Matthew Graham
Director: Rob Bailey
Guest star: Rory Feeney (MI5 Officer), Laurence Mitchell (Johnny D), Carlie Falco (Cloe), Marsha Crosby (Daniella), Leigh Funnelle (Bryony Ellis), John Hopkins (Anton), Augustus Prew (Peter Ellis/Noah Gleeson), Christopher Fairbank (Gordon Blaney), John Salthouse (James Crowe), Cate Fowler (School Teacher), Jack Doolan (Jason Sweeney), William Gaminara (Victor Gleeson), Robert Bowman (IT Project Manager)
A very good hacker has infiltrated MI5 computers and could reveal MI5's secret information to the world. The suspect trail leads to a teacher, Gordon Blakeney at a particular school. Zoe goes undercover as a teacher at this school. Meanwhile, Danny goes undercover as a journalist friendly to SFM, a group associated with Blakeney that believes that the government should be toppled.
10 :02x04 - Blood and Money
Writer: Howard Brenton
Director: Rob Bailey
Guest star: Tim Nolan (Young Russian Man), Robert Sebastian (Hotel Manager), Daniel Kruyer (Jack Brampton), Julie Cox (Maxi Baxter), Peter McDonald (Tim Prachett), Robert Hardy (Sir John Barry), Sophie Okonedo (Amanda Roke), Oliver Ford Davies (Sir 'Dicky' Bowman), Rade Serbedzija (Victor Schvitkoy)
Billions of dollars have been stolen electronically from an old British bank and MI5 is called in to help. The bank believes that they were robbed by one of the bank employees. Danny goes undercover at the bank. Meanwhile Zoe is having some fun with a man she has meet, Marco, and she goes back to his place. Unfortunately, Danny's investigations lead him to that particular apartment, and MI5 had it under 24-hour surveillance.
Before long a connection to the Russian mafia turns up.
11 :02x05 - I Spy Apocalypse
Writer: Howard Brenton
Director: Justin Chadwick
Guest star: Marty Cruikshank (Dot), James Holmes (Christopher John Jenning), Robyn Kerr (Mary), Richard Braine (Phil), Alastair Galbraith (John Macleish), Dale Rapley (Paul Dumbarton), Jo Joyner (Stephanie Mills), Mark Lewis Jones (Mark Wooley), Annabelle Apsion (Bridget Macey), Robert Willox (MI5 Interrogator)
MI5 is put to the test. Literally, a test. Pearce's department is tested by the higher-ups to see how they will react in certain circumstances. Oddly enough, though, certain pieces of information start to turn up that suggest that while Pearce’s department is undergoing its test, the outside world is in reality under attack. What is real, and what is part of the test? How should they react?
12 :02x06 - Without Incident
Writer: David Wolstencroft
Director: Justin Chadwick
Guest star: Aaron Swartz (Trent), Steven Kirby (Trevor), Robert Harrison (MI5 Operator), Fred Ridgeway (Jarvis, the Seedy Man), Todd Boyce (Troy), Ruth Gemmell (Miranda), Phillippe Smolikowski (Francois (French Delegate))
The US President makes a surprise visit to England, and MI5 has been left wondering what is happening. Christine Dale, CIA agent, arrives at MI5 and says that the CIA are in charge of the security during the President's visit, and that she specifically is in charge and wants access to MI5 files.
Meanwhile, Tom's ex-girlfriend has decided to try to get back at Tom by leaving his picture up around town that contain a phone number and over "special services." Tom's distracted, and Dale can't afford for him be distracted.
13 :02x07 - Cleanskin
Writer: Simon Mirren
Director: Ciaran Donnelly
Guest star: Aaron Martins (Denton Franks), Geoff Cotton (Henri Durand), Philippe De Grossouvre (Richard Bertrand), Adam Deacon (Billy), Tyrone Lewis (Kyle), Heshima Thompson (JJ Franks), Philippe Caroit (Jean-Luc Goyon)
MI6 & MI5 is searching for a French weapons scientist by the name of Victor Durand. Durand disappeared, along with his research. Apparently, Durand wants to sell his project, code named "Firestorm," to the highest bidder.
Certain codes are needed and found by Pearce. Strangely he took these codes home with him, and had them promptly stolen from him. The codes were destroyed as looking to be of no value, but one of the robbers apparently has a very good memory of the codes and the team must get him to help them.
14 :02x08 - Strike Force
Writer: Steve Bailie
Director: Ciaran Donnelly
Guest star: Kieran Bew (Bryant), Leo Bill (Corporal Eric Woods), Michael Hodgson (Derek Hanson), Connor Ryan (Wallace), Alex Palmer (Sergeant Major Baker), Reece Dinsdale (Major Sam Curtis)
Rumors of a military mutiny lead to Tom going undercover in the armed forces. Meanwhile a rail strike puts a nuclear shipment in danger, and Zoe is put in charge of transporting it by road. Tom is frustrated to be "wasted" and believes that there is no truth to the rumors and requests a transfer. Danny arrives with some transfer papers, but before Tom leaves, his cover is blown. Apparently, there just might be something to those rumors after all.
15 :02x09 - The Seventh Division
Writer: Ben Richards
Director: Sam Miller
Guest star: Abigail Hercules (Jenny Thomas), Daniel Cerqueira (Rafael Morientes), Sophie Lombard (Mariela Hernandez), Michael Cochrane (Ross Vaughan), Gary Sefton (MI5 Operative), Santiago Cabrera (Camilo Henriquez)
A Columbian drug cartel, the Chala Cartel, is operating in the UK and the good guys are trying to stop them. When plans turn up that reveal that the cartel is attempting to smuggle missiles into the country, MI5 gets involved in the form of Tom.
Tom rides along on a customs op. Things get rough and all but Tom are killed. MI5 dig deeper and dig up that the cartel has some high connections through the oil industry.
16 :02x10 - Smoke and Mirrors
Writer: Howard Brenton
Director: Sam Miller
Guest star: Mac McDonald (Mac McDonald), Samantha Coughlan (Lisa Joyce), Tomas Arana (Herb Ziegler/Hermann Joyce), Elizabeth Chambers (Woman), Bruce Payne (Michael Kaharias)
Christine Dale turns up news that an American assassin has been sent by the Iraqis to kill a high level British government official. Despite the fact that the CIA doesn't want MI5 to know of the assassin, Dale informs Tom Quinn, but he must keep it quiet.
Quinn investigates on his own, though unofficially informs Danny and Zoe, as he needs their help. Danny and Zoe are suspicious, especially since Tom doesn’t want Harry informed of their mission. Evidence starts to turn up that Tom might have turned traitor and the hunt is on.
17 :03x01 - Project Friendly Fire
Writer: Howard Brenton
Director: Jonny Campbell
Guest star: Sam Spruell (Jason Belling), Frances Tomelty (Carmen Joyce), Tomas Arana (Herman Joyce), Tim McInnerny (Oliver Mace), Fiona Carew (Nurse), Tristan Hickey (CIA Man), Michael Culver (Hugo Weatherby)
The episode starts with a short recap of the previous episode (which was the last episode of season 2): Tom Quinn shot Harry Pearce and then swam out into the North Sea, presumably to die.
The new material starts with a scene of Harry Pearce being rushed to the hospital.
Meanwhile, with MI5 agent Tom Quinn blamed for the death of the Chief of Defense, and with Tom's fellow MI5 agents tarred with his betrayal, the chairman of the Joint Intelligence Committee (JIC), Oliver Mace, sees this tragedy as the perfect opportunity to lay the ground-work for a merged single Ministry of Security with a political head and under the control of the government.
The MI5 team try to both prevent Mace from succeeding in his plan and try to prove that Tom Quinn is innocent. As MI6 agent Adam Carter notes, the best defense is to prove Quinn innocent. Carter has come over to help the injured Pearce run his section.
Will Tom be proved innocent? Will the “super-agency”get created over the ashes of MI5 & MI6 and the other intelligence agencies?
18 :03x02 - The Sleeper
Writer: Howard Brenton
Director: Jonny Campbell
Guest star: Jenny Howe (Mrs Sayle), Jalaal Hartley (Lawrence Sayle), Richard Harrington (Will North), James Vaughan (Deputy Assistant Commissioner), Rebecca Bridges (Sophie Roberts), Hannah Bridges (Liz Roberts), Jessica Turner (Helen Roberts), Ian McDiarmid (Professor Fred Roberts), Mary Nighy (Jemma Roberts)
Episode opens with MI5 setting off a bomb in an apartment building in East End London. And then Harry Pearce activates a sleeper agent, Professor Fred Roberts, who is reluctant to awaken. Roberts is a Nobel Prize winning chemist who is a year from retirement. MI5 need him to pretend to create “red mercury” which can be used to create a nuclear explosion in plutonium and to sell this “red mercury” to a London terrorist organization. Apparently, MI5 has information that a terrorist organization in London has plutonium, but no method of using it. The terrorist organization is completely off MI5's radar and they need to use the sleeper agent to draw the terrorists out into the open (Operation Fly-Trap). Tom Quinn leads the team, with Adam Carter hanging around to help. An early scene shows Quinn a little too exited to destroy the sleeper’s family as a test to see if the professor will join them in the mission, but is he?
Meanwhile, the press is interested in the explosion at the apartment building in London, and Zoe is interested in one member of the press (Will North). After getting approval from MI5, she dates Will North.
Operation Fly-Trap is Tom’s first mission after coming back to MI5 after being targeted by his government as a traitor. Will he do a good job? How will he handle being back on the job?
19 :03x03 - Who Guards the Guards?
Writer: Robert Walters
Director: Cilla Ware
Guest star: Harriet Walter (Deep Throat), Jamie Martin (Tube Engineer), Alisdair Simpson (MI6 Officer), Richard Harrington (Will North), Anupam Kher (Harakat), Paul Bhattacharjee (Muhammed Khordad), Tim McInnerny (Oliver Mace), Simon De Selva (Zuli)
Oliver Mace has made a deal with a terrorist leader, and the price is one former member of the terrorist gang. That former member currently lives undercover in the UK.
While standing guard over a wanted writer, wanted dead by some extremists middle easterners, Danny intercepts an assassination attempt on the life of the writer, Zuli. Or so it would appear. The only one actually hit is the writer's bookstore owning friend Harakat.
Adam notices this particular fact and tasks Danny with guarding Harakat while the rest of the team try to track down the assassin.
Meanwhile, Zoe's relationship with Will North advances.
20 :03x04 - A Prayer for My Daughter
Writer: Ben Richards
Director: Cilla Ware
Guest star: Huw Rhys (Andy North), Richard Harrington (Will North), Caroline Carver (Catherine Townsend), Stuart Laing (Richard Hollins), Corin Redgrave (David Swift), Julian Rivett (Chauffeur), Jan Chappell (Patricia Norton), Anton Lesser (Nicholas Ashworth)
A Middle East peace conference is being held in the UK, but the conference head, Patricia Norton, has been abducted and killed. Norton had just seen Adam and his last words with her reveal a need to investigate David Swift and a Israeli terrorist group known as the November Committee. They are committed to stopping the peace process, or at least creating a peace that they can live with. That would involve a "Greater Israel" that would absorb the Gaza strep and the west bank into Israel.
Danny and Zoe go undercover in the Palestinian Freedom Campaign, which has close ties to the UK MP Nicholas Ashworth (the close ties involve him being the chairman of the organization).
Back at MI-5 headquarters, the gang is sitting around talking about what they have found out. Danny starts showing pictures of the people that work on the Palestinian Freedom Campaign until Harry stops the proceeds with the remark that a particular woman on the screen is his daughter.
Danny is tasked with finding out what the daughter is doing there, by seducing her.
21 :03x05 - Love and Death
Writer: David Wolstencroft
Director: Justin Chadwick
Guest star: Dermot Crowley (Eric Newland), John Sheahan (Bill), Barnaby Kay (John Fortescue), Luke de Lacey (Waiter), Richard Harrington (Will North), Debra Gillett (Psychologist)
Operation Scare the Scientist: A UK scientist is working on the bubonic plague, trying to increase its deadliness, and he has ties with the North Koreans. MI-5 has sent Danny and Zoe off to encourage the scientist to not work with the North Koreans. Unfortunately, the operation quickly turns into Operation Kill the Scientist.
Meanwhile, Ruth is spending a rather large part of her time on the job listening to the tapes of a particular man. Eventually she has lunch with him, in that she goes to the restaurant he is scheduled to eat at, and sits in a seat at the next table. Sam and Malcolm help her.
22 :03x06 - Persephone
Writer: Ben Richards
Director: Justin Chadwick
Guest star: Richard Harrington (Will North), Hannah Storey (Gillian Doyan), Daniel Evans (Defence QC), Ian McNeice (Judge), Cosh Omar (Hasan Doyan), Rory MacGregor (Colin Wells), James Laurenson (Lord Young), Haluk Bilginer (Emre Celenk), Penny Downie (Prosecution QC), Carsten Hayes (Mahmoud), Jack Tanner (Café Owner), Arkie Alomar (MI5 Agent), Dominic Mafham (DS Loughton), Kayvan Novak (Sevilin Ozal)
Aftermath of Operation Aladdin: Zoe is on trial in the UK. Within the first five minutes, the audience learns that Zoe had gone undercover and had infiltrated the Turkish mafia. Three men were killed in a building, apparently on the orders of Zoe. One of those men was a police officer working undercover - hence the trial. The episode continues with Zoe on trial and with the witnesses revealing what had happened.
23 :03x07 - Outsiders
Writer: Raymond Khoury
Director: Bill Anderson
Guest star: Richard Harrington (Will North), James Barriscale (John), Adrian Rawlins (Andrew Forrestal), Kate Benedict (Headmistress), Clare Corbett (Teacher), William El Gardi (Arab at Computer), James Howard (Reporter at Mosque), Robert Culver (Pharmaceutical Executive), Paul Jesson (Guy Facer), Owen Oakeshott (Paramedic)
Due to the results from the trial, Zoe is now off the team, and Danny is quite upset. Trying to contain his own emotions, he is confronted by an angry and confused Will North.
Meanwhile, medicine has been tampered with, bank systems and other highly sensitive systems have been hacked, and MI-5 rushes to save the day. The government believes that the hackers are Muslim terrorists. MI-5 believes otherwise. Ruth learns who the hacker is, but is immediately captured. The terrorists issue a demand for £100 million in diamonds, but don't note that they are also holding Ruth.
24 :03x08 - Celebrity
Writer: Howard Brenton
Director: Bill Anderson
Guest star: Rebecca Palmer (B), Vincenzo Nicoli (Rudolphino Ponti), Arabella Weir (Michelle Molby), Adrian Lukas (John Sylvester), Andy Serkis (Riff), Tim McInnerny (Oliver Mace)
The son of a faded rock star, Riff, is kidnaped and MI-5 is asked to help. Riff had recently been knighted, so the pressure is on.
Fiona Carter, Adam's wife, goes undercover at Riff's house, as Miss B, Riff's wife, rather dislikes the police and MI-5. Fiona finds the disturbing truth.
25 :03x09 - Frequently Asked Questions
Writer: Robert Walters
Director: Alrick Riley
Guest star: Owen Teale (Robert Morgan), Nila Aalia (Juliet Taylor)
Robert Morgan, a mercenary, is spotted by MI5 visiting an old Soviet arms dump. He is picked up and interrogated. They quickly realize that terrorists plan on using a missile on some target in central London. They find out that they target will be hit within 72 hours. Morgan doesn't talk, so, despite some hesitation, they torture him.
26 :03x10 - The Suffering Of Strangers
Writer: Ben Richards
Director: Alrick Riley
Guest star: Rob Dixon (Mike), Paul Jesson (Guy Facer), James Dicker (Wesley Carter), Mido Hamada (Butterfly), Zubin Varla (Ahmed), Raza Jaffrey (Zafar Younis), Badria Timimi (Khatera Abuzeid)
Adam and Fionna are being targeted, and their house is under surveillance, but by who?
Meanwhile, Fionna and Danny are tasked with bugging a house suspected as being used by terrorists. They are surprised and captured by the group that had been watching Adam and Fionna. Danny and Fionna's lives are in jeopardy.
27 :04x01 - The Special (1)
Writer: Ben Richards
Director: Antonia Bird
Guest star: Ania Sowinski (Lydia), Andrew Tiernan (Forster), Gregory Finnegan (Mark Wainwright), John Chancer (Monroe), Georgina Sowerby (Vicar), Stuart Sinclair Blyth (Neil), Peter Brooke (Peter), Martine McCutcheon (Natasha), Corey Johnson (Richard Boyd)
The team all attend Danny's funeral, but the church is rocked by the sound of a distant explosion and suddenly all their beepers go off. There has been a bomb in a crowded market and an American group, Shining Dawn, claim responsibility. They demand the release of their leader, and say that until their demands are met, another bomb will go off somewhere in London, every 10 hours, designed to cause maximum casualties.
28 :04x02 - The Special (2)
Writer: Ben Richards
Director: Antonia Bird
Guest star: Martine McCutcheon (Natasha)
Adam persuades Natasha to act as a distraction, before bursting in with a firebomb and saving Zaf. They capture the two men and Adam holds one over a balcony to try and persuade him to talk. He refuses and Adam lets him fall to his death. After the same threat the second man tells all he knows.
29 :04x03 - Divided They Fall
Writer: Ben Richards
Director: Alrick Riley
Guest star: Rupert Graves (William Sampson), David Threlfall (Keith Moran), Joanna Burnett (Reporter 2), Steven Pacey (Peregrine Howell-Davis MP), James Dicker ( Wesley Carter), Margot Leicester (Auntie May), Mark Flitton (Brian Thorn)
As a result of recent terror attacks, the British public have become fearful and increasingly conservative. Attacks and riots against asylum seekers are common. MP William Sampson announces he is crossing the floor and will fight an election as a representative of the far right party, The British Way.
30 :04x04 - Road Trip
Writer: Howard Brenton
Director: Alrick Riley
Guest star: Sam Vincenti (Hussein Hadrami), Lewis Alsamari (The Son), Mem Ferda (Doorkeeper), Sarah Matravers (Caroline), Goran Kostic (Bodyguard), Chris Walker (Driver), Silas Carson (The Prince), Khalid Abdullah (Yazdi), Charles Daish (Phil Norton)
MI5 receive a tip-off from MI6 that a known terrorist intends to enter the UK via an illegal immigrant route. They know Mohammed Yazdi will join a truck starting from Istanbul, and believe that a playboy Prince, Prince Hakim, is involved in the organization of the route. When questioning the Prince gives them no further leads, Adam decides to go undercover on the truck and attempt to talk Yazdi out of his terrorism.
31 :04x05 - The Book
Writer: Raymond Khoury
Director: Jeremy Lovering
Guest star: Debra Gillett (Debra Langham), Stanley Townsend (Roy Woodring), Douglas Hodge (Gary Hicks), Simon Lenagan (Man in black suit), Andrew Burt (Clive McTaggart)
Gary Hicks, a journalist, arrives at the home of an ex-MI5 officer for an interview. The officer, Clive McTaggart, is in the garden with a plastic bag over his head and two men standing by him. Realizing he has stumbled in on something he shouldn't know about, Gary runs for his life and gets away, but he has been seen. Later, Harry is upset to learn of the officer's death on the news.
32 :04x06 - The Innocent
Writer: David Farr
Director: Jeremy Lovering
Guest star: Joey Ansah (Abbud), Alki David (Badrak Madjid), Munir Khairdin (Rachid Medi), Frazer Douglas (Alpha 2), Alan Parnaby (Businessman), Ralph Brown (Paul Seymour), Debra Gillett (Debra Langham), Joanna Roth (Rebecca Sinclair), Jimi Mistry (Nazim Malik)
French intelligence contact the team. They have evidence to suggest that Nazim Malik is co-ordinating a terror attack from his high-security prison cell. Malik was arrested two years ago and detained under the terrorism act, but has never been charged. Harry decides the only way to work out who Malik is in contact with, and what is planned, is to release him. This delights Malik's lawyers who want to sue the British Government, claiming that Malik is an innocent man.
33 :04x07 - Syria
Writer: Raymond Khoury
Director: Omar Madha
Guest star: Khalid Laith (Ali), Glyn Grain (Immigration Officer), Nina Fry (Nurse Jenny), Bijan Daneshmand (Basheer Shaloob), James Dicker (Wesley Carter), Philip Bowen (Ambassador Wright), Sam Dastor (Riyad Barzali), Darrell D'Silva (Farook Sukkarieh), Nathalie Armin (Joumana)
A message comes through from Damascus suggesting that the Syrian Foreign Minister, Riyad Barzali, wants to talk to MI5. Unfortunately he is constantly guarded by a secret service minder, making it virtually impossible to get him alone. If the secret service find out that he wants to meet with the British he will almost certainly be killed.
34 :04x08 - The Russian
Writer: Howard Brenton
Director: Omar Madha
Guest star: David Fleeshman (Malcolm Stackley), Jo McInnes (Sally Curtis), Willian Oxborrow (Freddy Frost), Phyllis Logan (Diana Jewell), Ben Daniels (Oleg Korsakov), Jane Lowe (Fiona's Mother), James Dicker (Wesley Carter), David Burke (Fiona's Father), George Baker (Hugo Ross), Janet Amsden (Madeline)
Harry has tasked Adam with keeping an eye on Hugo Ross. He was a double agent for the Russians during the cold war, and still a huge believer in communism. Adam is angry that he's been given such routine work, and discovers he's been cut out of something much bigger, Operation Songbird. He begs Harry to be allowed to take part, but Harry simply tries to persuade Adam to spend some time with the service psychiatrists in Tring. Adam refuses to admit he needs it, but he hasn't even been able to bring himself to tell Wes or Fiona's parents about her death.
35 :04x09 - The Sting
Writer: Robert Walters
Director: Julian Simpson
Guest star: James Dicker (Wesley Carter), John Sharian (Gorman), Andrew Alston (Gameshow Host), Peter Vollebregt (Pollard), Ged Simmons (Dixon), Philip Arditti (Louis Khurvin), William Armstrong (Alex Roscoe)
As Britain teeters on the brink of war with Iran, Harry finally gets fed-up of turning a blind-eye to the CIA acting as though they run the country. He steps in and prevents an unofficial extradition of a terrorism suspect, telling Alex Roscoe of the CIA that he had to follow the correct procedure in future.
36 :04x10 - Diana
Writer: Howard Brenton
Director: Julian Simpson
Guest star: James Scales (Peter Haigh), Johnnie Lyne-Pirkis (Sir Petrie Meacham), Lindsay Duncan (Angela Wells)
Ruth gets home one evening to discover her dead stepbrother's girlfriend, Angela, sitting in her living room. He had killed himself a year earlier after being fired from the Royal Protection Squad. Angela announces that he wasn't fired, as Ruth believed, because he was an alcoholic, but because he knew too much. She produces a microdot from her teeth; it contains information that suggests that not only was Princess Diana murdered by MI5, but Harry was directly involved in the plot.
37 :05x01 - Gas and Oil (Part 1)
Writer: Ben Richards
Director: Omar Madha
Guest star: John Elmes (Alan Taylor), Shaheen Khan (Ruby Mackenzie), Alan McKenna (Lee Mackenzie), Roger Ringrose (Gerry Houghton), David Phelan (ATC), James Cash (Conspirator), Alicia Eyo (Raoula), Stuart Pendred (Officer Lancashire), Steve Nicolson (Steve Jensen), Roger Allam (Paul Millington), John Castle (Jocelyn Myers), Lyndon Ogbourne (Blogger), John Dibble (Walsh), Gugu Mbatha-Raw (Jenny), James Dicker (Wesley Carter), Nicholas Jones (Michael Collingwood), Simon Woods (Rowan), Robert Glenister (Home Secretary), Lindsay Duncan (Angela Wells)
Rumors of further terrorist attacks spread throughout the country. Will the UK be hit by biological weapons?
The MI5 squad respond to these rumors and try to protect the PM's son, who has been receiving death threats.
38 :05x02 - Gas and Oil (Part 2)
Writer: Ben Richards
Director: Omar Madha
Guest star: Lyndon Ogbourne (Blogger), Shaheen Khan (Ruby MacKenzie), John Dibble (Walsh), Alicia Eyo (Raoula), Stuart Pendred (Officer Lancashire), Annita Mcveigh (Journalist), Xavier Anderson (Armed Officer), Simon Woods (Rowan), John Elmes (Alan Taylor), Nicholas Jones (Michael Collingwood), Robert Glenister (Home Secretary), Steve Nicolson (Steve Jensen), James Cash (Conspirator), Mark Straker (Manager), David Phelan (Air Traffic Controller), John Castle (Jocelyn Myers), Roger Allam (Paul Millington)
The team's attempt to prevent the car bomb plot to kill the Home Secretary has serious consequences for Juliet. The conspirators place pressure on the weakened prime minister, forcing him to pass measures that will turn Britain into a dictatorship. As Harry races to stop them, he is taken prisoner by treacherous MI6 boss Collingwood - who plans to have him executed.
39 :05x03 - The Cell
Writer: Ben Richards
Director: Julian Simpson
Guest star: Joanna Horton (Leigh Bennett), Ofo Uhiara (Michael Johnson), Larry Lamb (Iain Kallis), Gugu Mbatha-Raw (Jenny), Adhir Kalyan (Samir), Aaron Neil (Ibrahim)
Zaf risks his life on an undercover mission to infiltrate an al-Qaida cell planning a bomb attack on the UK, in an attempt to turn a member of the organisation. Meanwhile, Adam learns the terrorists are embarking upon a suicide mission which will put his colleagues in great danger, and attempts to reach their target as events spiral out of control.
40 :05x04 - World Trade
Writer: David Farr
Director: Kenny Glenaan
Guest star: Lucian Msamati (Himself), Shanika Warren-Marland (Sophie Brewster), Nikki Amuka-Bird (Michelle Lopez), Colin Stinton (Traynor Styles), George Harris (Gabriel Sekoa), Alex Jennings (James Allan)
The team are posted undercover at the heart of the talks during the World Trade Summit for Africa, where they uncover an assassination plot which they must risk their lives to quash. However, they are faced with a moral dilemma when they realise the true motivations behind the deadly plan.
41 :05x05 - The Message
Writer: Andrew Woodhead
Director: Kenny Glenaan
Guest star: Gary Milner (Policeman In Cell), David Fynn (Policeman At Ruth's House), Nick Haverson (IT Man), Nicola Goodchild (Prison Security Guard), Tim McInnerny (Oliver Mace), James Vaughan (Head of MET), Jonathan Barlow (Mik Maudsley)
After witnessing a man commit sucide, and exchanging what he had given her for a disc, Ruth is arrested after leaving a groccery store.
Harry suspects a cover-up when seven terrorists die in a fire. Adam investigates and suspects that there really is a cover-up, and the people in charge of the cover-up try to blackmail Harry into going along with the cover-up.
42 :05x06 - Hostage Takers (Part 1)
Guest star: Matt Day (Neil Sternin), Tim McInnerny (Oliver Mace), James Vaughan (Head of MET)
Fearing for their future energy needs, the British government enters into negotiations to acquire the Saudi's future oil production. The price? Nuclear secrets. The problem? A Saudi Prince has connections with Al-Qaeda and might attempt to derail the deal.
And then terrorists storm the Saudi embassy with Ros inside.
43 :05x07 - Hostage Takers (Part 2)
Writer: Zinnie Harris
Director: Kenny Glenaan
Guest star: Matt Day (Neil Sternin)
Ros is trapped inside the embassy during the siege of the Saudi Trade Centre. The terrorists demand the release of al-Qaida prisoners in Saudi Arabia and resort to killing the hostages when the government refuses to negotiate with them - but then suspicion arises as to the militants' real identities.
Rumors also arise which lead the MI5 team to suspect that they have a terrorist informant in their ranks.
44 :05x08 - Agenda
Writer: Julian Simpson
Director: Julian Simpson
Guest star: Matthew Blackmore (Poe), Sam Woodward (Daniel Ellis), Shaun Dingwall (Steven Paynton), Lennie James (David Newman), Hassani Shapi (Khalid Mansoor), Pip Torrens (Charles Lee)
A Christian group issues a statement claiming responsibility for a wave of attacks against Muslim's, including the assassination of an extremist Muslim cleric. Adam goes undercover. Complicating matters, the Israelis become involved when they find out that the Christian group also has anti-Semitic leanings.
45 :05x09 - The Criminal
Writer: Neil Cross
Director: Julian Holmes
Guest star: Maisie Dimbleby (Lucy Dempsey), Marcel Iures (Niko Grecic), Lucy Scott (Librarian), Janet Spencer-Turner (Nurse), James Greene (Charlie Holland), Biddy Wells (Olivia), Jay Villiers (Simon), William Key (Andrew Faulkes), Michael Maloney (John Russell), Gavin Abbott (Burke), Alec Newman (Richard Dempsey)
The MI5 group is tasked with the assignment of protecting Serbian war criminal Niko Grecic so that he can be prosecuted at The Hague. Rumors suggest that Adam's treacherous former MI6 partner, Richard Dempsey is searching for Grecic. Dempsey and Adam had been friends until Dempsey turned traitor fifteen years ago and gave Adam up to the Serbs for money.
Dempsey now visits Adam and claims that he really has been an MI6 double-agent all these years. Unfortunately, Dempsey's boss is now dead, so he cannot prove his story.
46 :05x10 - Aftermath
Writer: David Farr
Director: Julian Holmes
Guest star: Phyllis Logan (Diana Jewell), Jenny Quayle (Jo's Mum), Leila Borris (Female Terrorist), Charles Mayer (Michael Fitzgerald), Tom Beard (Andrew Starkey), Michael Carter (Sir Maurice Clark), Phoebe Nicholls (Janet Wheeler), Cheryl Campbell (Deputy Prime Minister), Anthony Flanagan (Craig Fletcher), Stewart Wright (Alan Jackson), Derek Hutchinson (Robert Cash)
Environmental terrorists seize control of the Thames Barrier, and threaten to flood London. The terrorists have one main demand: release a secret document titled "Aftermath." The Government, through the Deputy PM, denies knowledge of the document.
Apparently the document does exist and details a plan for the USA and Great Britain to split the rest of the world's resources between them.
The team, through the efforts of Adam and Ros (after Adam's stress-induced collapse), try to handle the situation.
47 :06x01 - The Virus: Part 1
Adam and Zaf find a case they are working on going badly wrong. The repercussions of what has happened cause problems on the streets of London.
48 :06x02 - The Virus: Part 2
The team try to deal with the after effects of the virus unleashed by the Tehran blast is on to the streets of London.
49 :06x03 - The Kidnap
A British plane is thought to have been hijacked and taken to an American airstrip. Ros is captured by the Yalta organisation when the team show up and they learn of an international cover-up.
50 :06x04 - The Extremist
The team are worried that an Algerian extremist is planning an attack on an American businesses in the United Kingdom.
51 :06x05 - The Deal
As Adam attempts to stop Iranian nuclear deal on British soil he finds himself being set up for the murder of a mugger. The mugger turns out to be a reporter investigating the Tehran train bomb.
52 :06x06 - The Courier
When Ana dupes him Adam isn't happy. Adam and Ros are forced to fly to Tehran to avert a potential disaster from happening. They have to make sure that their mission isn't discovered though.
53 :06x07 - The Broadcast
Harry works with the CIA's Bob Hogan to make sure any future threat from Iran will be dealt with. A Yalta a group of extremists learn of a televised debate between the United Sates and Iran and make plans to disrupt it.
54 :06x08 - Infiltration
Ros tries to stop the Yalta organisation from discovering her true identity. Ben Kaplan reveals her true identity though. Ros presents Adam and Harry with a plan but can Ros be really trusted.
55 :06x09 - Isolated
The team find themselves suspended from the Grid following what happened involving Ros. Harry learns from an old adversary about a bomb he has planted in London. The team realise that if they respond their lives will be in danger but if they don't it will be public who suffer. A shocking discovery is made when they discover who is behind the latest threat.
56 :06x10 - The School
The team discover that a London school will be the target of hardliners resisting the peace which has new been created with Iran. They also find out that Zaf killed by a group of mercenaries. When Jo is kidnapped by the same group Adam is determined to rescue her.
57 :07x01 - New Allegiances
An Al Qaeda group abduct a British soldier and demand that Remembrance Sunday otherwise they will add him to death toll. The team try and track the group down. Former MI5 agent Lucas North is released following a spy swap.
58 :07x02 - Split Loyalties
Harry is determined to avenge the death of Adam and asks Lucas North for help. Lucas' loyalties are no longer with MI5 though and Harry's trust in him is exploited.
59 :07x03 - The Tip-Off
Lucas tells the team that he was interrogated by the Russians about Operation Sugar Horse and the team realise that they have a mole within MI5.
60 :07x04 - A Chance for Peace
When Al Qaeda's number three wants to negotiate a deal the team are surprised. Lucas finds himself being tested by the Russians. Harry continues to look for the real traitor as Lucas tries to keep up the ruse.
61 :07x05 - On the Brink
With the British economy on the brink of collapse, Ros is forced to go undercover in the City to try and catch an international financier who wants to see the country ruined. Ros's life is soon in danger.
62 :07x06 - Accidental Discovery
When a teenage boy discovers a government conspiracy he finds himself drawn into the world of MI5 and ends up on the run and hiding out. Lucas and the team try to save the boy from being killed by those who don't want him talking about what he has discovered. Harry gets closer to finding out the identity of the Russian mole.
63 :07x07 - The Mole
Harry finds himself being accused of being the Russian mole. As the rest of the team insist that Harry is innocent Lucas goes to Moscow to try and find out more.
64 :07x08 - Nuclear Strike
With a nuclear attack on London imminent, the only person who can help the team is the traitor who's identity is still unknown. With the Russians close behind, the team and the traitor try to get to the codes and bomb in time.
65 :08x01 - Series 8, Episode 1
Everyone wonders if Harry is dead or alive when there is still no sight of him. Section D manages to find out that Harry had managed to stop an operation to smuggle weapons-grade uranium into Iraq to make the war justifiable. The rogue officers who where behind it now want the uranium back no matter what the cost.
66 :08x02 - Series 8, Episode 2
The country's energy supplies are threatened by an explosion at a gas plant and the team are forced into action. The Government is forced to start secret talks with Tazbekstan. Rustam Urazov offers to supply the country with the energy it needs but wants Section D to do nothing if he eliminates a few enemies. Harry ends up being forced to take drastic action to save the country.
67 :08x03 - Series 8, Episode 3
Section D are assigned to find out what is being planned as the Bendorf group which is made up of the eight richest men in the world meet in Britain. Ros attends the meeting undercover but everyone at the meeting ends up being taken hostage. One of the terrorists called Finn Lambert puts Thomas Mickelson on trial and broadcasts it live on the Internet. After Mickelson is found guilty Harry and the others worry what will happen next. Ros attempts to get Finn's girlfriend to help her.
68 :08x04 - Series 8, Episode 4
Lucas finds the past catching up with him after his former Russian prison torturer, Oleg Darshavin, shows up with intelligence about a Sudanese terror attack on London. Harry and Ros aren't willing to pay the price that Darshavin wants for the information. Harry and Ros reluctantly agree to let Lucas meet with Darshavin. Lucas comes close to getting the information out of Darshavin but the arrival of CIA officer Sarah Caulfield puts the whole thing in jeopardy. After getting the name of the terrorist, Section D track him down but he is murdered before Ros can question him. Darshavin ends up being the only person left who can help the team. Harry works out that they have a traitor working within the team.
69 :08x05 - Series 8, Episode 5
Harry is puzzled by the sudden death of CIA boss Samuel Walker. Harry is convinced that he did not commit suicide and when another CIA agent dies he begins tho think that the deaths have something to do with the power meeting that is being held in Basel. Ros is surprised when her old mentor, Jack Coleville, contacts her and it soon becomes apparent he is involved in what has been going on.
70 :08x06 - Series 8, Episode 6
With the country on the verge of bankruptcy, the Government cant pay its national debt payments. Section D are asked to get back more than a billion pounds of illegal earnings from the DeWits bank. The team have to find out what, or who, Nightingale is after Ruth's investigations into the power meeting at Basel pay off.
71 :08x07 - Series 8, Episode 7
After a Pakistani intelligence officer is murdered in south London, the head of the Pakistani intelligence service talks to Harry and Ros. They learn that there is a planned attack on some Muslims and there are determined to stop an all out war between the Hindu and Muslim communities.
72 :08x08 - Series 8, Episode 8
After an Indian submarine ends up in Pakistani hands the problems between the two countries reaches crisis point. There is pressure is on to stop the first nuclear confrontation for over 60 years when India gives them seven days to release it. The team are forced to work with the Americans to put an end to the crisis. Nightingale puts a bomb in the hotel room of one of the Indian delegates so that the Pakistani president will be killed and the war between the two countries will be made worse. Ros and Lucas try to get the Pakistani president out alive after finding the bomb.
73 :09x01 - Series 9, Episode 1
Writer: Jonathan Brackley, Sam Vincent
Director: Paul Whittington
Guest star: Rashmika Torchia (Aala Hall), Sandeep Garcha (Khalida Hall), Souleiman Ismael (AQ Pirate 2), Jon Ivay (Greaseball (Carlo)), David Hounslow (Graham Hall), Patrick Regis (Chief Pirate), Peter Bankole (Abib), George Georgiou (Theo (First Mate)), Robert Glenister (Nicholas Blake), Iain Glen (Vaughn Edwards), Simon Russell Beale (Home Secretary)
Section D is in mourning following the death of Ros Myers who was killed in an explosion whilst attempting to save the life of the British Home Secretary. Harry is hit hardest by her death and he's unhappy to find out that a trusted friend has blood on their hands. Harry wants revenge and is determined to get it. The following month, Lucas North gets on board a ship in Tangier as he follows Somalian Al Qaeda star, Abib. He is joined on board by Dimitri Levendes, who is pretending to be the ship's captain. When Somali pirates attack the ship, Lucas ends up in mortal danger. He ends up being saved by an Eastern European prostitute, who he later finds out is undercover mercenary Beth Bailey who is following Abib. Lucas and the rest of Section D concentrate on stopping the floating bomb after he escapes and makes his way back to London. Beth also shows up in London with news about the ship. Harry isn't sure she can be trusted but with time running out he has no choice but to.
74 :09x02 - Series 9, Episode 2
Writer: David Farr
Director: Michael Caton-jones
Guest star: Steve Toussaint (Felix Osuba), Joanne Howarth (Rosemary Vine), Daniel Adegboyega (Nigerian Operative 1), Katy Barker (Mrs Westhouse), Jack Sandle (Ukrainian), Richard Jacobs (Hotel Receptionist), Victor Zaragoza (Hector Cordoba), Tom McKay (Saul De Vries), Simon Russell Beale (Home Secretary), Iain Glen (Vaughn Edwards), Laila Rouass (Maya Lahan), James Faulkner (Robert Westhouse), Nigel Lindsay (Jacob Chapman), Paul Herzberg (James Vine)
Beth Bailey finds herself being thrown straight into the thick of things with her first operation with Section D. She has to go undercover as an oil trader at a secret meeting of the country's top oil dealers. After being given intelligence that Robert Westhouse is the subject of an assassination attempt, Beth has to make sure that nothing happens to him. The oil traders are attacked in a machine gun massacre before the meeting takes part and only Beth and a man named Jacob Chapman survive. Section D attempt to uncover who is responsible. As Ruth delves deep into the case she finds out about a link between one of her colleagues and the masked gunmen.
75 :09x03 - Series 9, Episode 3
Writer: Richard McBrien
Director: Michael Caton-jones
Guest star: Kirsty Wark (Newsreader), Tom Marshall (Nurbeck Omosheva), Nicholas Sidi (Russian Ambassador (as Nick Sidi)), Amanda Hale (Meg Kirby), Donald Sumpter (Stephen Kirby), Jonathan Aris (Azis Aibek), Julian Lewis Jones (Viktor Barenshik), Laila Rouass (Maya Lahan), Iain Glen (Vaughn Edwards), Simon Russell Beale (Home Secretary)
After word gets out that the Azakstan Freedom Front is trying to get their hands on a lethal outlawed nerve agent, Lucas is sent by Harry to help the Russians destroy the sample. After one of the AFF make their way to London to try and get their hands on the substance, the team are forced to work swiftly if it is to prevent a biological weapon that could wipe out everything in London in hours if it is used.
76 :09x04 - Series 9, Episode 4
Writer: Jonathan Brackley, Sam Vincent
Director: Paul Whittington
Guest star: Matt Selby (QMK Guard), Wai Wong (Chinese Scientist), Ed Cooper Clarke (British Scientist), David Ka-shing Tse (Shao), Christopher Goh (Chinese Operative 3), Nicholas Lue-Fong (Yao), Nigel Whitmey (Senior Suit), David Lee (Chinese Operative 1), Simon Russell Beale (Home Secretary), Iain Glen (Vaughn Edwards), Laila Rouass (Maya Lahan), Benedict Wong (Kai), Colin Salmon (Alton Beecher), Daphne Cheung (Jiang Li)
After a Chinese snatch team arrive in London for a two day visit, Section D find their suspicions becoming aroused. Beth ends up calling on the services of Kai, a Chinese Security Services agent who she has helped groom to help infiltrate security. Ruth ends up going undercover at QMK and finds out that the Chinese are looking for Jiang Lee, a scientist who has discovered a de-salinisation technique worth a huge amount of money. The Chinese are desperate to get their hands on Lee anyway they can.
77 :09x05 - Series 9, Episode 5
Writer: Sam Vincent, Jonathan Brackley, Oliver Brown
Director: Julian Holmes
Guest star: Rob Heanley (Policeman 1), Georgina Rich (Dana Morrison), Maya Lubinsky (Anna Cohen), Mounir Margoum (Muatt Hutri), Joseph Long (Elwan Raed), Paul Freeman (Levi Cohen), Akin Gazi (Baltasar Jad), Laila Rouass (Maya Lahan), Iain Glen (Vaughn Edwards), Simon Russell Beale (Home Secretary)
The American President travels to London to chair a secret talk between peace negotiators from Palestine and Israel in an effort to sort out the differences between the two countries. Beth and Dimitri both go undercover as Home Office liaison officers at the talks, while the rest of team have to make sure that nothing jeopardises the event.
78 :09x06 - Series 9, Episode 6
Writer: Jonathan Brackley, Sam Vincent
Director: Julian Holmes
Guest star: Uriel Emil (Banketik), Alec Utgoff (Chief Hacker), Hugh Simon (Malcolm Wynn-Jones), Colin Salmon (Alton Beecher), Fiona Glascott (Danielle Ortiz), Laila Rouass (Maya Lahan), Iain Glen (Vaughn Edwards), Simon Russell Beale (Home Secretary)
After British security is breached which results in a fatal American drone attack on a US army camp, the chief the CIA travels to The Grid. The relationship between the MI5 and the CIA are not good and Harry ends up agreeing that Section D and the rest of MI5 will use the USA's security system so that there will be no more breaches of security. Lucas has to protect ex-hacker Daniella Ortiz.
79 :09x07 - Series 9, Episode 7
Writer: Anthony Neilson
Director: Edward Hall
Guest star: Dave Legeno (Frenchman), Robert Hitchmough (Customs Officer), Rosalie Craig (Red Headed Woman), James Daffern (Lucas North in Flashback), Hi Ching (Yimou), Trevor Cooper (Deery), Hugh Simon (Malcolm Wynn-Jones), Laila Rouass (Maya Lahan), Iain Glen (Vaughn Edwards), Simon Russell Beale (Home Secretary)
Keith Deery approaches Ruth and claims that he has uncovered covert activity. While following a woman for somme minor offences, he witnesses a "dead drop" message left on a park bench. Ruth is not convinced by Keith's claims though. Ruth ends up discovering though that Deery has applied to MI5 four times but was rejected due to mental instability following his wife's death. After talking to Dimitri, Ruth decides to trust her instincts and follow up the potential lead.
80 :09x08 - Series 9, Episode 8
Section D have to face their toughest challenge so far when they are assigned to find one of their own. After Lucas North's shock revelations about his former life and double identity, Harry tells the team to find him no matter what the cost.
81 :10x01 - Series 10, Episode 1
The team has been left shocked by Lucas's betrayal, and with Harry Pearce on gardening leave, Section D has a new leader called Erin Watts. She has brought Calum Reed with her into the team. Harry Pearce manages to win his MI5 employment tribunal and is soon back on the Grid in the thick of the action. Secrets end up being discovered after Max Witt, a retired spy and Harry's colleague in Berlin during the Cold War, is discovered to have been murdered.
82 :10x02 - Series 10, Episode 2
Calum is attacked whilst walking down the street during a routine intelligence sharing exercise with MI6. His computer is stolen which contains some highly classified information on MI5's undercover assets. The names are file are soon leaked, leaving lives in danger, and the team face a race against time to stop the next spy being exposed.
83 :10x03 - Series 10, Episode 3
MI5 receive a red flash after a radioactive material is detected at an airport. They have intelligence that a dangerous anarchist has secretly entered the country. Dimitriiis asked to help find out more by honey-trapping the anarchist's sister, Natalie. The Home Secretary asks Ruth to dinner to talk about a role as his security advisor. The team work out that the leaking of MI5's assets and the foiled assassination on Russian Foreign Minister Gavrik have a connection.
84 :10x04 - Series 10, Episode 4
A controversial religious leader parole appeal is refused and he ends up sending two recently released inmates on a revenge suicide mission. One of the inmates at the prison called Ashu has been passing on intelligence to MI5 while serving his sentance. The team want Ashur to find out information and he agrees to help if his daughter becomes a UK citizen. Things don't go to plan when his daughter is kidnapped by the bombers and used as collateral, leaving Harry in an impossible position.
85 :10x05 - Series 10, Episode 5
There is new evidence of CIA agent Jim Coaver's involvement in some recent attacks on MI5. Harry ends up kidnapping his former Cold War colleague but soon ends up realising that he's been looking in the wrong place and Jim could be innocent. Harry, with Ruth's help attempt to steal Coaver's laptop from under the noses of the Americans at the US embassy.
86 :10x06 - Series 10, Episode 6
Harry finds himself facing deportation to America following the death of CIA agent Jim Coaver. After some new evidence comes to light about the recent attacks on the United Kingdom and the Government's proposed alliance with Russia, Ruth and her former colleagues in Section D free Harry from CIA custody. Harry's suspicions see him going to another of his former Cold War adversaries.