Dr. Richard Donald Stanton
William Lundigan
Dr. Donald L. Stanton / Narrator
Herbert Marshall
James O'Herli
King Donovan
David Wells
Kem Dibbs
Dr. Sidney K. Fuller
James Best
Dr. Jerry Lockwood
Richard Carlson
Dr. Jane Flynn
Martha Hyer
Susan Manners
Dawn Addams
Walter Gordon
Robert Karnes
Dr. Delmar
Lawrence Dobkin
Dr. Paul Dryden
George Eldredge
Dr. Frank Werner
Dan Riss
Dr. Klinger
Michael Fox
Director
Producer
Ivan Tors
Story
Director of Photography
Stanley Cortez
Screenplay
Curt Siodmak
Set Decoration
Victor A. Gangelin
Associate Producer
Herbert L. Strock
Original Music Composer
Harry Sukman
Art Direction
Jerome Pycha Jr.
Makeup Artist
Louis Phillipi
Editor