First aired: Sep/20/1971
Writer: Philip Mackie
Director: James Goddard
Guest star: James Cossins (Dr. Jervis), Stanley Lebor (Paul Petrofsky), Valerie Bell (Kate Wilfer), Joanna Cooper (Edith Johnson), Bernard Archard (Dr. Davidson), Terence Rigby (Sgt. Bates), John Neville (Dr. Thorndyke), Jean Marlowe (May O'Brien), Eve Pearce (Mrs. Goldstein), Ray Lonnen (Sam Turner), Nicholas Smith (Solicitor), Edward Dentith (Superintendant Miller), Frank Mills (Polton), Morris Perry (Coroner), Paul Darrow (Dr. Hart)

First aired: Sep/27/1971
Writer: Philip Mackie
Director: Jonathan Alwyn
Guest star: Jon Croft (Huntley), Hugh Morton (Judge), Dave Carter (Dennis Rank), Anthony Dawes (Lawyer), Leslie French (Parkinson), John Bryans (Prosecutor), Maurice Quick (Magistrate), Robert Stephens (Max Carrados), Patrick O'Connell (Captain), Susan Tebbs (Arabella), Richard McNeff (Driver), Neil Wilson (Water Company Inspector), George A. Cooper (Beedel), Christopher Cazenove (Stringer), Michael Elwyn (Greatorex), Gregory Phillips (Water Company Assistant), John Wentworth (Thaxted), John Quarmby (Court Officer), Gordon Russell (Newsboy)

First aired: Oct/04/1971
Writer: Julian Bond
Director: James Goddard
Guest star: John Stratton (Mallows), John Carlisle (Stedman), Tony Caunter (Fielder), Patti Dalton (Post Office Clerk), Paul Angelis (Gillet), Sheila Gish (Mrs. Chalmers), Hilary Hardiman (Lady Jamison), Petronella Barker (Miss Parrot), Christopher Beeny (Sparks), Kenneth Colley (Farrish), Robin Ford (Barrat), Peter Vaughan (Horace Dorrington)

First aired: Oct/11/1971
Writer: Steven Anthony
Director: Kim Mills
Guest star: Peter Cellier (Duke of Wiltshire), John Standing (Lord Amberly), Felicity Gibson (Lady Amberly), Rafiq Anwar (Asif), Jaron Yaltan (Mujob), John Gill (Dewhurst), John Dawson (Inspector Fullalove), Barbara Murray (Duchess of Wiltshire), Paul Whitsun-Jones (Marquis of Orpington), John Rapley (Bouchet), John Nettleton (Belton), Dudley Foster (Superintendant Vyvyan), Marcia Warren (Annette), Joan Scott (Mrs. McVitie), Dino Shafeek (Ali), Roy Dotrice (Simon Carne)

First aired: Oct/18/1971
Writer: Philip Mackie
Director: Alan Cooke
Guest star: Donald Pleasence (Carnacki), Tony Steedman (Captain Hisgins), David Millett (Footman), Michele Dotrice (Mary Hisgins), Michael Johnson (Charles Beaumont), Allan Warren (Bootboy), Aimée Delamain (Miss Hisgins), Geoffrey Whitehead (Henry Parsket), Arthur White (March)

First aired: Oct/25/1971
Writer: Julian Bond
Director: Mike Vardy
Guest star: Peter Vaughan (Horace Dorrington), Michael Forrest (Jacques Bouvier), Lloyd Lamble (Inspector Brent), Michael Nightingale (Harkness), Ingrid Hafner (Maria Hamer), Nancy Nevinson (Madame Bouvier), Oscar Quitak (Leon Bouvier), Michael Burroughs (Boy), Jeremy Mason (Young Man), Alison Hughes (Maid), Jeremy Irons (Nephew), Petronella Barker (Miss Parrot), Paul Eddington (Hamer), Arnold Diamond (Solomons), Kenneth Colley (Farrish)

First aired: Nov/01/1971
Writer: Philip Mackie
Director: Piers Haggard
Guest star: Clifford Parrish (Finch), Brenda Cowling (Maid), Nadim Sawalha (Arab Servant), Marianne Benet (Madame Sara), Jasmine Hilton (Beatrice Selby), Moris Farhi (Dr. Sanchez), Roger Delgado (Silver), William Corderoy (Jack Selby), George Murcell (Vandeleur), John Fraser (Dixon Duce), Caroline John (Edith Dallas)

First aired: Nov/08/1971
Writer: Stuart Hood
Director: James Goddard
Guest star: Michael Poole (Ivanov), David King (Gillow), Jonathan Collins (William), Jacqueline Pearce (Jenny Pride), James Bolam (Roberts), Madeleine Mills (Maggie), Ronald Hines (Jonathan Pryde), Bill Wallis (Winfield), Paul Williamson (Captain Harris), Raf De La Torre (Prince Oblonsky), Cyril Shaps (Hunter), Derek Francis (Dixon)

First aired: Nov/15/1971
Writer: Alan Cooke
Director: Alan Cooke
Guest star: Margot Boyd (Frau Mathis), Ann Beach (Mary Grandard), Elizabeth Weaver (Elizabeth Lowenthal), Audrey Murray (Maud), Elvi Hale (Lady Molly), Lucretia Burgess (Shop Assistant), Rosalind Lloyd (Lucy), Mel Churcher (Annie), Catherine Lacey (Mrs. Steinberg), Frances White (Lady Irene), Peter Bowles (Inspector Saunders), Una Stubbs (Katie Harris), Tricia Thorns (Sally Anne)

First aired: Nov/22/1971
Writer: Bill Craig
Director: Bill Bain
Guest star: John Levene (Policeman), Cyd Hayman (Miss Chapman), Dan Meaden (Inspector Nettings), Esmond Knight (Captain Cutler), Hamilton Dyce (Styles), Robert Hartley (Perroquet), Cheryl Hall (Millie), Andrea Lawrence (Vera), Stefan Kalipha (Rameau), Colin Rix (Yorky), Timothy Bateson (Goujon), Peter Barkworth (Martin Hewitt)

First aired: Nov/29/1971
Writer: Julian Bond
Director: Jonathan Alwyn
Guest star: Victor Platt (Hawkins), Derek Smith (Henry Jacobs), Frank Williams (Roberts), Jo Rowbottom (Suzie Shepherd), Donald Sinden (Romney Pringle), Michael Bates (Colonel Sandstrom), Alethea Charlton (Doris Pratt), Betty Cardno (Dresser), Leslie Bryant (Stage Doorkeeper), John Evitts (Photographer)

First aired: Dec/02/1971
Writer: Anthony Skene
Director: Alan Cooke
Guest star: Windsor Davies (Inspector Illingworth), Leon Collins (Constable Bellows), Renate Roman (Mrs. Brand), Maggie Wells (Ethel), Robert Lang (Bernard Sutton), Joan Henley (Mrs. Wycherly), John Owens (Curate), Lally Bowers (Lady Faber), Richard Hurndall (Lord Faber), Terence Bayler (The Duke), Ron Pember (Jaffee), John Gatrell (Major General), James Cairncross (Briggs), John Warner (Piercy), Moira Redmond (Mrs. Kavanagh), Steve Hodson (Abel)

First aired: Dec/09/1971
Writer: Philip Mackie
Director: Jonathan Alwyn
Guest star: Brian Godfrey (Peach), Joe Dunlop (Wilkins), Wally Thomas (Bank Porter), Malcolm McFee (Travel Clerk), Barry Ashton (Bank Clerk), Michael Cashman (Henry Stevens), Toke Townley (Lost Property Assistant), Charles Lloyd Pack (Neal), James Ottaway (Parsloe), Anthony Sharp (Lister), Jane Lapotaire (Emily Shaw), Leslie Dwyer (Lost Property Man), Ronald Hines (Jonathan Pryde), John Kidd (Estate Agent), Peter Sugden (Bank Porter), Tim Hardy (Sam Gunter), Lynette Erving (Maid), Roger Gartland (Charles Laker), Michael Lynch (Merston), Peter Barkworth (Martin Hewitt), Arthur Pentelow (Inspector Plummer)

First aired: Jan/29/1973
Writer: Alan Cooke
Director: Graham Evans
Guest star: James Cairncross (Coroner), Julian D'albie (Judge), Reg Lye (Mortuary Superintendent), Cyd Hayman (Laura Stanley), Sidney Johnson (Court Clerk), Lois Baxter (Beatrice Hazeldine), Judy Geeson (Polly Burton), Simon Lock (Andrew Campbell), John Savident (Sir Arthur), Richard Beckinsale (Richard Frobisher), Tom McCarthy (Frank Errington), Michael Sheard (Dr. Jones), Frank Wyle (Prosecutor), George Tovey (Porter), Richard Smith (James Travis), Michael Rose (Stationmaster), Dennis Blanch (Inspector Thornton), Anthony Higgins (William Hazeldine), Christopher Timothy (Solicitor)

First aired: Feb/05/1973
Writer: Alexander Baron
Director: Jonathan Alwyn
Guest star: Alan Tilvern (Cornelius), Geoffrey Davion (Company Guard), Barry Keegan (Inspector Lipinski), Bill Bailey (Drunk), Geoffrey Morris (De Beers Director), Michael Redfern (Mac), Barry Ashton (Head Waiter), Martin Jarvis (Philip Marsden), Richard Bond (Drunk), Richard Morant (Charlie Lomas), Peter Malam (Pianist), Aideen O'Kelly (Bridie Sullivan), Patrick Barr (Arundel), Brian Cobby (De Beers Director)

First aired: Feb/12/1973
Writer: Julian Bond
Director: Reginald Collins
Guest star: Clifford Rose (Ransome), Donald Pickering (Fielding), Richard Eden (Officer), Michael Gough (Governor), Nicholas Courtney (Hutchinson Hatch), Janet Davies (Perkins), Davyd Harries (Officer), Derek Ware (Escaping Prisoner), Michael Meacham (Ballard), Ray Smith (Chief Prison Officer), Peter Jolley (Officer), Douglas Wilmer (Professor Van Dusen)

First aired: Feb/19/1973
Writer: Gerald Kelsey
Director: Derek Bennett
Guest star: Christopher Neame (Sydney Wing), Neil McCarthy (Anderson), Mitzi Rogers (Madame Bertrand), Bruce Boa (Poignton), Joan Heath (Mrs. Farrow), Bernard Hepton (Laxworthy), Larry Cross (Foster), Gary Watson (Marquis LeFant), Peter Birrel (Helder), Michael Cadman (Naval Officer), John Nettleton (Admiral Christopher), Maggie Peacock (Marie)

First aired: Feb/26/1973
Writer: Alexander Baron
Director: Peter Duguid
Guest star: Stuart Sherwin (Sgt. Carew), Michael Goldie (Fred), Suzanne Neve (Miss Mackail), Derek Tansley (Colonel), Charles Gray (Eugene Valmont), David Battley (Podgers), Dennis Clinton (Summertrees), George Moon (Cabbie), Barry Linehan (Inspector Hale), Thick Wilson (Joe), Ronnie Masterson (Housekeeper), Roger Bizley (Gauntlet), Stella Courtney (Shop Assistant), Jerold Wells (Phelps), Anthony Allen (Rogers), George Howe (Lord Semptam)

First aired: Mar/04/1973
Writer: Michael Meyer
Director: Jonathan Alwyn
Guest star: Vernon Dobtcheff (Molbech), Paul Whitsun-Jones (Fat Man), John Thaw (Lt. Holst), Julian Fox (Nicolai Wolkinski), Ian Stirling (Policeman), Michael Beint (Police Sergeant), Michael Turner (Inspector Andersen), John Gatrell (Jeweller), Anthony Newlands (Vorodov), Susanna East (Girl), Peter Whitbread (Hotel Receptionist), Philip Madoc (Dimitri Wolkinski), Virginia Stride (Ulla Holst), Catherine Schell (Maria Wolkinski), Tony Shibbald (Police Captain)

First aired: Mar/11/1973
Writer: Julian Bond
Director: Derek Bennett
Guest star: Douglas Wilmer (Professor Van Dusen), Dennis Chinnery (Morey), Mark Eden (Varley), Margaret John (Receptionist), Robert Hartley (Doctor), Veronica Strong (Mrs. Morey), Charles Morgan (Mallory), William Mervyn (Sir Hector Drummond), Wallas Eaton (Sterling), Laurence Payne (Prescott), Michael Guest (Constable)

First aired: Mar/18/1973
Writer: Anthony Steven
Director: Dennis Vance
Guest star: Ronald Lewis (Dagobert Trostler), Alan Cullen (British Ambassador), Carolyn Jones (Countess Leys), Dennis Thorne (Berthold), Nicola Pagett (Comtessa Nadja), Michael Mulcaster (Count Czernik), Geoffrey Colville (Lenke), Harold Kasket (Dr. Heinrich Weinlich), Francis De Wolff (Walter Frankenburg), Michael Aldridge (Archduke Othmar), Bill Horsley (Wiegand), Brian Protheroe (Deubner)

First aired: Mar/26/1973
Writer: Reginald Collins
Director: Reginald Collins
Guest star: Peter Sallis (Dr. Jervis), Max Faulkner (Policeman), Eric McCaine (Inspector Badger), Derek Smith (Professor Popplebaum), Julian Glover (Alfred Barton), Keith Taylor (Man), Graham Seed (Porter), George Innes (Adolph Schonberg), Nicholas Selby (Superintendent Millen), Clive Rogers (Victim), Peter Beton (James), Barrie Ingham (Dr. John Thorndyke), Michael Harding (Ticket Collector)

First aired: Apr/02/1973
Writer: Gerald Kelsey
Director: Graham Evans
Guest star: Derek Jacobi (William Drew)

First aired: Apr/09/1973
Writer: John Hawkesworth
Director: Jonathan Alwyn
Guest star: John Crocker (Vincent Goyle), Jack May (James Ladbroke), Robert Webber (Clergyman), Antony Viccars (Driver), Clifford Cox (Sergeant), Charles Lloyd Pack (Judge), Margot Thomas (Lady Revell), John Barron (Sir Revel Revell), John Phillips (Professor Dyne), Howard Goorney (George Wilson), Michael Stainton (Brander), Robin Ellis (Charles Dallas), Celia Bannerman (Milly Revell), Jay Neill (Matthew), Ken Barker (Clerk of Court), Maurice Quick (Bailiff), Mark Rogers (Newsboy), Gordon Gostelow (Inspector Mayhew), Jack Galloway (Journalist), Joe Dunlop (Constable Oates)

First aired: Apr/16/1973
Writer: Ian Kennedy Martin
Director: Jonathan Alwyn
Guest star: Douglas Blackwell (Taylor), Jean Marsh (Mrs. Vanrenan), John Sterland (Shipping Clerk), John Dawson (Jacobs), John Barcroft (Gaylord), Edward Dentith (Sir Edward Markham), Normand Bird (Inspector Trent), Melanie Jane (Mrs. Clayton), John Tardoff (Fox), Ronald Fraser (Harrocks), Michael Cashman (Robbins), Stephen Yardley (First Officer Clayton), Bill Herbert (Third Officer), Lindsay Campbell (Captain Handmay), Annette Kerr (Mrs. Pallin), Paul Hardwick (Lord Altington)

First aired: Apr/23/1973
Writer: Owen Holder
Director: Don Leaver
Guest star: Rosemary Lord (Kitty), Kathleen Byron (Miss Lyle), Patricia Gerrard (Woman), Jackie Nolan (Dancer), Sarah Craze (Rose), Sara Kestelman (Hagar), Stephan Chase (Freddy), Frederick Radley (Charlie), Doris Rogers (Mrs. Arryford), Jonathan Adams (Sgt. Finch), Philip Locke (Vark), Joss Ackland (Grubber)