Dr. Matt Hastings
John Agar
Stephanie 'Steve' Clayton
Mara Corday
Lt. John Nolan
Edwin Rand
Jet Pilot
Clint Eastwood
Townsman
Wag Blesing
Prof. Gerald Deemer
Leo G. Carroll
Sheriff Jack Andrews
Nestor Paiva
Joe Burch
Ross Elliott
Josh
Hank Patterson
Paul Lund / Eric Jacobs / Airport Workman
Eddie Parker
Barney Russell
Bert Holland
Dr. Townsend
Raymond Bailey
Andy Andersen
Steve Darrell
Makeup Artist
Bud Westmore
Director
Jack Arnold
Screenplay
Robert M. Fresco
Martin Berkeley
Producer
William Alland
Original Music Composer
Herman Stein
Director of Photography
George Robinson
Editor
William Morgan
Art Direction
Alexander Golitzen
Alfred Sweeney
Music Supervisor
Joseph Gershenson
Hairstylist
Joan St. Oegger