Maurice Meister
Herbert Lom
Dr. Lomond
Donald Wolfit
Gardener
John Stuart
Bell
John Slater
Stranger
Edward Chapman
Station Sergeant Carter
Campbell Singer
Lisa
Mai Zetterling
Cora Ann Milton
Greta Gynt
Sam Hackett
William Hartnell
Inspector Bliss
Norman Wooland
John Lemley
Denholm Elliott
Mrs. Hackett
Dora Bryan
Inspector Wembury
Charles Victor
Commissioner
Walter Fitzgerald
Director
Guy Hamilton
Original Music Composer
Malcolm Arnold
Theatre Play
Edgar Wallace
Camera Operator
Robert Day
Production Design
William Hutchinson
Screenplay
Lesley Storm
Editor
Bert Bates
Val Valentine
Producer
Hugh Perceval
Costume Design
Joseph Bato
Director of Photography
Edward Scaife
Boom Operator
Ken Ritchie
Hairdresser
Eileen Bates
Music Director
Muir Mathieson
Assistant Camera
Gerry Fisher