"The mental breakdown of a guilt-ridden man provides the drama in this fascinating psychological profile starring Richard Attenborough as a scientist who can't live with himself after he accidently kills the brother of his fiancee."
Richard Attenborough
as Peter Watson
Bernard Lee
as Inspector Thompson
Donald Houston
as Dr. Sanderson
Dorothy Alison
as Mrs. Barnes
Patricia Jessel
as Mrs. Lawrence
Virginia Maskell
as Helen Grey
Kenneth Griffith
as Pollen
Alfred Burke
as Mr. Barnes
Charles Houston
as Nicholas
Maureen Connell
as Eunice Blair
Amy Dalby
as Miss Acres
Walter Hudd
as Superintendent
Patrick Jordan
as Injured Sergeant
Graham Stewart
as Sergeant Morris
Victor Brooks
as Sergeant Collins
Edward Judd
as P.C. Stevens
Arthur Gross
as P.C. Clark
Dan Cressey
as P.C. Maclean
John Charlesworth
as Army Lieutenant
Raymond Ray
as Reporter
Edward Evans
as Fire Brigade Officer
David Griffith
as Johnny
Polly Clarke
as Dulcie
Alun Falconer
Writer
Don Chaffey
Additional Dialogue
Director
John Trumper
Editor
Gerry Massy-Collier
Camera Operator
Ralph Bond
Executive In Charge Of Production
'Freddie' Pearson
Production Manager
Betty Sherriff
Hairstylist
Philip Leakey
Makeup Artist
Bill Salter
Sound Recordist
Betty Adamson
Wardrobe Master
Jane Buck
Continuity
William Kellner
Art Direction
Ronald Spencer
Assistant Director
Robert Dunbar
Producer
Gerald Gibbs
Director of Photography