Val Neal
Paul Carpenter
Mary Foster
Patricia Roc
Dr. Martin
John Serret
Dr. Kenyon
Oliver Johnston
Susie
Kay Callard
Dr. Francis Pelham
Roland Culver
Inspector Ross
William Hartnell
Detective Sergeant Davis
Gordon Boyd
Atkins
Edgar Driver
Wang
Tom Tann
Miss Barbara Barton
Ellen Pollock
Senior Test Flight Official
Robert Sansom
Dr. Bradford
Martin Wyldeck
Screenplay
Montgomery Tully
Director
Production Manager
Jim O'Connolly
Producer
Alec C. Snowden
Editor
Geoffrey Muller
Theatre Play
Falkland L. Cary
Original Music Composer
Trevor Duncan
Director of Photography
Phil Grindrod
Hairdresser
Anne Box
Continuity
Marjorie Owens
Sound Editor
Derek Holding
Assistant Director
Bill Shore
Sound Recordist
Sidney Rider
Ronald Abbott
Art Direction
C. Wilfred Arnold
Wardrobe Master
Maude Churchill
Makeup Artist
Jack Craig
Camera Operator
Ronnie Taylor