Cast
Marshall Thompson
Major Jeff Cummings
Kynaston Reeves
Prof. R. E. Walgate
Kim Parker
Barbara Griselle
Stanley Maxted
Col. Butler
Terry Kilburn
Capt. Al Chester
James Dyrenforth
Mayor Hawkins
Robert MacKenzie
Const. Howard Gibbons
Peter Madden
Dr. Bradley
Gil Winfield
Dr. Warren
Michael Balfour
Sgt. Kasper
Launce Maraschal
Melville
Meadows White
Ben Adams
E. Kerrigan Prescott
Atomic Engineer
Lala Lloyd
Amelia Adams
Shane Cordell
Nurse
Alexander Archdale
Minister (uncredited)
Directing
Arthur Crabtree
Director
Douglas Hickox
Assistant Director
Writing
Herbert J. Leder
Screenplay
Amelia Reynolds Long
Story
Art
John Elphick
Set Designer
Camera
Lionel Banes
Director of Photography
Crew
Karl-Ludwig Ruppel
Special Effects
Production
Charles F. Vetter
Executive Producer
Ronald Kinnoch
Production Manager
John Croydon
Producer
Costume & Make-Up
Barbara Barnard
Hairstylist
Jim Hydes
Makeup Artist
Anna Duse
Costume Supervisor
Sound
Buxton Orr
Original Music Composer
Peter Davies
Sound Recordist