Cast
Richard Carlson
Dr. Jeffrey Stewart
King Donovan
Dr. Dan Forbes
Leo Britt
Dr. Benton
Jean Byron
Connie Stewart
Harry Ellerbe
Dr. Allard
Frank Gerstle
Col. Willis
John Vosper
Capt. Dyer
Byron Foulger
Mr. Simon
Leonard Mudie
Howard Denker
Kathleen Freeman
Nelly
William Benedict
Albert
John Zaremba
Chief Watson
Douglas Evans
Pilot
Strother Martin
Co-Pilot
Michael Fox
Dr. Serny
Watson Downs
Mayor
Lee Phelps
City Engineer
Roy Engel
Gen. Behan
John Dodsworth
Dr. Carthwright
Charles Williams
Cabbie
Michael Granger
Kenneth Smith
Jarma Lewis
Stewardess
Elizabeth Root
Joy
Juney Ellis
Spinster
Crew
Curt Siodmak
Director
(Directing)
Curt Siodmak
Screenplay
(Writing)
Ivan Tors
Screenplay
(Writing)
Herbert L. Strock
Supervising Editor
(Editing)
Harry Redmond Jr.
Special Effects
(Crew)
Jack R. Glass
Visual Effects
(Visual Effects)
Richard Dixon
Assistant Director
(Directing)
Maxwell O. Henry
Second Unit Director
(Directing)
George Van Marter
Art Direction
(Art)
Howard Fogetti
Sound
(Sound)
Herbert L. Strock
Director
(Directing)
George Van Marter
Production Design
(Art)
Victor A. Gangelin
Set Decoration
(Art)
Charles Van Enger
Director of Photography
(Camera)
Blaine Sanford
Original Music Composer
(Sound)
Paul Beaver
Original Music Composer
(Sound)
George Van Marter
Associate Producer
(Production)
Ivan Tors
Producer
(Production)
Bill Naylor
Sound Effects
(Sound)