When Professor Willingdon becomes wary of the nuclear weapons he is helping build, he steals a warhead and threatens to detonate it in London in seven days unless the government begins nuclear disarmament. As Willingdon goes into hiding, Detective Folland of Scotland Yard sets out to find him. Willingdon's daughter Ann also joins the cause, hoping she can talk sense into her father before he causes a catastrophe.
Cast
Barry Jones
Professor John Malcolm Francis Willingdon
André Morell
Superintendent G.W. Folland
Olive Sloane
Goldie Phillips
Sheila Manahan
Ann Willingdon
Hugh Cross
Stephen Lane
Joan Hickson
Mrs. Emily Georgina Peckett
Ronald Adam
Arthur Lytton, the Prime Minister
Marie Ney
Mrs. Willingdon
Joss Ackland
Station Policeman
Marianne Stone
Woman in Phone Box
John Stratton
Army Mechanic
George Spence
Man on Bus (uncredited)
Crew
John Boulting
Director, Editor, Producer
Roy Boulting
Director, Screenplay, Editor, Producer
Frank Harvey
Screenplay
Paul Dehn
Story
James Bernard
Story
Gilbert Taylor
Director of Photography
Mike Johnson
Assistant Director
Peter De Sarigny
Associate Producer
John Elphick
Production Design
Dennis Fox
Camera Operator
Gerald Moss
Camera Operator
Ray Sturgess
Camera Operator
Robert Huke
Camera Operator
Dorothy Holloway
Casting
Honoria Plesch
Costume Design
U. P. Hutchinson
Makeup Artist
Bert Eggleton
Sound Editor
Ann Chegwidden
Assistant Sound Editor
Bert Ross
Sound Recordist
Eric Cass
Boom Operator
John Addison
Original Music Composer
Shirley Barnes
Continuity
John Palmer
Production Manager
Hubert Clifford
Conductor
