Emrys Jones
Robert Matthews / John Barlow
Zena Marshall
Ann Farrington
John Horsley
Inspector Clements
Joan Hickson
Mrs. Fenton
Hector Ross
Canning
Roger Maxwell
Col. Hector Smythe
Marne Maitland
Heinz
Ian Fleming
Dr. Wilson
Frederick Piper
Thomas Pritchard
George Pastell
Ferrari
Lesley Deane
Mrs. Smythe
Victor Platt
Sergeant
John Gilling
Director
Lawrence Huntington
Screenplay
George Fowler
Assistant Director
Robert S. Baker
Producer
Monty Berman
Director of Photography
Charles Poulton
Sound Recordist
Jill Carpenter
Makeup Artist
George Burgess
Sound Supervisor
Monty Berman
Producer
John Lanchbery
Music Director
Eric Besche
Camera Operator
Ray Simm
Art Direction
Gladys Goldsmith
Continuity
Sidney Hayers
Editor
Jack Hanbury
Production Manager
Desmond Davis
Focus Puller