Michael Craig as John Harris

Patrick McGoohan as Dr Brown

Janet Munro as Pat Harris

Paul Rogers as Hart Jacobs

Malcolm Keen as Mr Harris Sr

Megs Jenkins as Mrs Gordon

Michael Bryant as John's Counsel

Leslie Sands as Clyde

Norman Wooland as Counsel for the Crown

John Barrie as Mr Gordon

Walter Hudd as Judge

Michael Aldridge as Harvard

Basil Dignam as Mapleton

Frank Finlay as Teddy's Father

Maureen Pryor as Teddy's Mother

Kenneth J. Warren as Sergeant Finley

Ellen McIntosh as Duty Sister

John Welsh as Marshall

Maurice Colbourne as Vicar

Freddy Ramsey as Teddy

Lynn Taylor as Ruth

Brian Wilde as Newspaper Photographer

Charles Simon as Custody Sergeant

Frank Gatliff as Barrister

Victor Harrington as Court Clerk

Alastair Hunter as Jury Foreman

Philip Ray as Curate