An honest businessman learns that his partner is involved in thefts---and murder. Gideon: John Gregson. Erickson: Donald Houston. Joan: Sarah Lawson. Randle: Victor Maddern. Carmichael: Glyn Houston. Jenson: Mike Pratt. Thompson: Gordon Gostelow. Smith: Michael Robbins. Keen: Alexander Davion. Michael: Guy Ross.
When a friend's son shoots another boy, Gideon (John Gregson) finds himself personally involved in the case. Kirk: Anthony Bate. Murphy: George Sewell. Vince: Michael Craze. Ches: Michael Standing. Helen: Ruth Trouncer. Chris: Howard Knight.
A group of wealthy, sadistic teenagers are responsible for a series of vicious assaults and thefts. Gideon: John Gregson. Sloane: Anton Rodgers. Coles: Derek Fowlds. Sue: Annette Andre. Elspeth: Jean Marsh. King: James Hunter. Keen: Alexander Davion. Caldwell: Roddy McMillan. Alison: Pauline Munro.
Gideon's daughter persuades him to help a friend whose brother has been accused of murder. Gideon: John Gregson. Mary: Jo Rowbotton. Bill: Alan Rothwell. Norton: Edward Townes. Clara: Virginia White. Keen: Alexander Davion. Mrs. Norton: Clare Kelly.
Gideon (John Gregson) uncovers some disturbing facts about a murdered student. Morna: Angela Douglas. Harriet: Kay Walsh. Copthorne: Ronald Adams. Bright: John Justin. Lydia: Alita Naughton. Lady Copthorne: Shelagh Fraser.
A slick, good-looking confidence man is suspected of kidnapping a millionaire's daughter. Gideon: John Gregson. Blake: Don Borisenko. Felisa: Lois Maxwell. Henderson: David Bauer. Nina: Lans Traverse. Erica: Georgina Ward. Keen: Alexander Davion. Guest: Donald Sutherland.
The police are stumped by a mysterious jewel thief---until he murders a witness. Spender: Patrick Allen. Gideon: John Gregson. Casey: Patrick Bedford. Hartz: Alec Mango. Anne: Ann Lynn. Mrs. Casey: Jean Marsh. Keen: Alexander Davion. Kate: Daphne Anderson. Italian Girl: Claudia West.
Gideon tries to recover the stolen trophies of a Scottish regiment. Gideon: John Gregson. McGregor: Finlay Currie. Ross: Allan Cuthbertson. Robbie: John Cairney. Dubec: John Serret. Murray: Michael Meacham. Barton Smith: Donald Pickering.
A mentally disturbed youth goes around London cutting off locks of girls' hair. Alan: David Collings. Gideon: John Gregson. Marjorie: Gillian Lewis. Lady Campbell-Gore: Fanny Rowe. Keen: Alexander Davion. Jack: Peter Jesson. Sophie: Rosemary Dunham. Appleby: Thomas Heathcote.
When Michael Penn wins a football pool, it seems like a dream come true---but it slowly turns into a nightmare. Gideon: John Gregson. Will: John Barrie. Liz: Megs Jenkins. Michael: Richard Carpenter. Sally: Toni Palmer. Langley: Philip Ray.
Gideon (John Gregson) suspects that a used-car dealer was murdered by his partner. Carroway: Jack Hedley. Mary: Sheila Allen. Marjorie: Jennifer Daniel. Little: James Culliford. Le Maitre: Reginald Jessup. Kathy: Nicola Pagett. Grant: Geoffrey Palmer.
The life of a woman is endangered when her husband---a killer---escapes from prison. Gideon: John Gregson. Benson: Derren Nesbitt. Ruby: Jennifer Wilson. Tisdale: John Hurt. Syd: Michael Cashman. Kate: Daphne Anderson. Keen: Alexander Davion. Charley: Arthur Lovegrove. Bell: Ian Rossiter.
A million pounds of Russian gold are stolen from a plane after it lands at London. Gideon: John Gregson. Bailey: George Baker. Dobson: Edwin Richfield. Kautsky: George Murcell. Phyllis: Pamela Conway. Sid: John Hall. Hill: Reg Lye. Len: Gary Miller.
A girl reports a murder attempt in the London subway. Gideon: John Gregson. Ellen: Anne Lawson. Lane: Donald Churchill. Stewart: Bryan Pringle. Keen: Alexander Davion. Robson: Esmond Knight. Mrs. Lane: Noel Dyson.
A small-time thief tries one last job---a big one---before he retires. Gideon: John Gregson. Gesham: Eric Barker. Pater: William Mervyn. Margaret: Joyce Grant. Keen: Alexander Davion. Fleming: Jack Rodney. Kate: Daphne Anderson. Hunter: Charles Lloyd Pack.
With the help of an old associate, Gideon (John Gregson) sets out to solve a strange case of robbery and murder. Rose: Virginia Maskell. Keston: Ray McAnally. Fingers: Dermot Kelly. Taylor: David Davies. Mary: Susan Lloyd. Keen: Alexander Davion. Yob: David Gregory. Alf: Michael Wynne.
An encounter with a 12-year-o1d purse snatcher sets Gideon (John Gregson) on the trail of a school for young thieves. Mrs. Clark: Angela Baddeley. Hemingway: Wensley Pithey. Lee: Maxwell Shaw. Keen: Alexander Davion. Lyon: Sydney Taffler. Ada: Suzan Farmer. Wray: Alan Baulch.
An accident victim's last words provide Gideon (John Gregson) with the lead needed to reopen a murder case. Borgman: Walter Brown. Lee: Norman Bird. Jane: Delphi Lawrence. Clare: Erica Rogers. Charlotte: Vanda Godsell. Keen: Alexander Davion. Richmond: Raymond Huntley. Kate: Daphne Anderson. Samuels: Meredith Edwards.
A young woman suspects that a friend's new husband is a killer. Rina: Justine Lord. Gideon: John Gregson. Keen: Alexander Davion. Carne: Ray Barrett. Marion: Rosemary Leach. Kate: Daphne Anderson. Macey: John Tate. Parker: Timothy Bateson.
A shrewd and calculating woman is responsible for the murders of several elderly, well-to-do men. Gideon: John Gregson. Martha: Kay Walsh. Maricut: Harry Fowler. Warr: John Dearth. Whitehead: Oliver Johnson. Keen: Alexander Davion. Kate: Daphne Anderson. Della: Marjie Lawrence.
The death of a stableboy leads Gideon (John Gregson) to a horseracing racket. Short: Michael Ripper. Keen: Alexander Davion. Janet: Penelope Horner. Middleton: Maurice Hedley. Knox: John Glyn-Jones. Johnson: Brian Phelan. Kate: Daphne Anderson. Campbell: Robert Brown. Mabel: Margery Mason.
A man sets out to prove the danger of tenement buildings---by setting fire to them. Gideon: John Gregson. Bishop: George Cole. Mrs. Tennison: Avril Elgar. Grady: Aubrey Richards. Keen: Alexander Davion. Kate: Daphne Anderson. Carmichael: Martin Boddey.
The leader of the neo-Fascist Victory Movement is the intended victim of a bombing. Vane: Roland Culver. Gideon: John Gregson. Miles: Keith Baxter. Cathy: Angela Douglas. Smith: Dervis Ward. Parsons: Allan Cuthbertson. Bennett: Dyson Lovell.
A victim of Nazi persecutions plans to assassinate a visiting German statesman in London. Gideon: John Gregson. Fischer: Alfie Bass. Cox: Gerald Harper. Sarah: Catherine Lacey. Scott-Marle: Basil Dignam. Jean: Patricia English. Keen: Alexander Davion.