It's Valentine's Day, and a distinguished scientist involved in atomic weapons research is brutally murdered. Was this an attempt to derail his scientific work or a politically motivated murder? Suddenly more murders committed in a similar fashion are popping up around London. Are these murders connected to the scientist - and if so, how? Jericho and his team must race against the clock to get the answers and catch the killer.
Smog envelops the city and a serial killer begins targeting young couples. The press believes this to be the work of 'The Butcher,' who was suspected to be responsible for a series of unsolved murders from the thirties. Jericho discovers a connection between the couples when he traces the murders back to a cinema where they had all seen the same film prior to their deaths. Deadly secrets reveal themselves as Jericho's team investigates further.
American soldiers arrive in Hastings to a mixed welcome and Foyle is called on to calm the locals. His attempts at soothing relations are jeopardized when a barmaid's involvement with a visiting soldier leads to murder. Foyle receives a warning from the War Office to tread carefully, yet in spite of this, he remains determined to find the truth about the girl's death. He soon realizes that he must defy his orders if he hopes to have any chance of solving the case.
Agatha Christie's attends a party at an estate, where a guest turns up dead after speaking about a child murder that went unpunished.
In “Miss Marple: Nemesis,” Agatha Christie's sleuth attempts to fulfill the last request of a recently deceased man to look into a possible crime. The problem: She has no clue as to the nature of the crime attempts to fulfill the last request of a recently deceased man to look into a possible crime. The problem: She has no clue as to the nature of the crime.
“Miss Marple: At Bertram's Hotel” finds the sleuth checking into a posh London hotel where other guests await the reading of a multimillionaire's will. But she winds up in an investigation when two hotel staffers are slain.
“Miss Marple: Ordeal by Innocence” finds the sleuth at a friend's wedding, which is upended when a visitor says that the executed murderer of the groom's ex-wife was with him at the time of the crime. Marple learns that the suspects are many, including her friend and the slain woman's adopted children.
“The Inspector Lynley Mysteries: Natural Causes” finds Lynley---who's on suspension--- helping Havers and Det. Insp. Fiona Knight with a drowning case.
After Lynley is reinstated, he joins Havers and their colleague Detective Constable Winston Nkata in trying to catch crime boss Michael Shand. Then their star witness is found shot dead on the tidal flats of the Essex marshes, which just happens to be Haver's childhood holiday retreat. She soon becomes convinced that cracking a twenty-year-old unsolved murder involving a local child will provide answers to both murders.
When Emily Proctor is found murdered in Hyde Park, Lynley and Havers are led to human rights lawyer Tony Wainwright. Wainwright's passionate temper and a concealed affair with the victim seem to place him as the main suspect, but when Emily's double life is exposed, Lynley and Havers enter a world of internet porn and a family with something to hide.
The 27th season concludes with “The Inspector Lynley Mysteries: In the Blink of an Eye”.
After photographer Peter Rooker is found dead in Soho, the investigation of Scotland Yard detectives Lynley and Havers leads them to a 1995 Bosnian massacre. But when Lynley asks his wife, Helen, for help in exploring the psychological aspects of the murders, a tragic series of events ensues.
Final episode of Mystery!. Beginning in 2008, Mystery! was merged with Masterpiece Theatre and is now known as Masterpiece Mystery.