Prof. Jim Tanner
George Hamilton
Bruce
Aldo Ray
Prof. Carl Melnicker
Nehemiah Persoff
Arthur Nordlund
Michael Rennie
Mrs. Van Zandt
Miiko Taka
Mrs. Hallson
Celia Lovsky
Mr. Hallson
Vaughn Taylor
Sylvia, party girl (as Miss Beverly Hills)
Beverly Powers
Briggs
Lawrence Montaigne
Prof. Margery Lansing
Suzanne Pleshette
Prof. Norman E. Van Zandt
Richard Carlson
Mrs. Sally Hallson
Yvonne De Carlo
Prof. Talbot Scott aka Scotty
Earl Holliman
Mark Corlane
Gary Merrill
Grover
Ken Murray
Flora
Barbara Nichols
Prof. Henry Hallson
Arthur O'Connell
Original Music Composer
Miklós Rózsa
Producer
George Pal
Screenplay
John Gay
Director
Byron Haskin
Novel
Frank M. Robinson
Set Decoration
Henry Grace
Don Greenwood Jr.
Director of Photography
Ellsworth Fredericks
Art Direction
Merrill Pye
Editor
Thomas J. McCarthy
George W. Davis