Director
Jack Arnold
DIRECTOR
Writer
Robert M. Fresco
WRITER
Martin Berkeley
Stars (in credits order)
John Agar
Dr. Matt Hastings
Mara Corday
Stephanie 'Steve' Clayton
Leo G. Carroll
Prof. Gerald Deemer
Nestor Paiva
Sheriff Jack Andrews
Ross Elliott
Joe Burch
Edwin Rand
Lt. John Nolan
Raymond Bailey
Townsend
Hank Patterson
Josh
Bert Holland
Barney Russell
Steve Darrell
Andy Andersen
Benjie Bancroft
Trooper (uncredited)
Wag Blesing
Townsman (uncredited)
Dee Carroll
Telephone Operator (uncredited)
Edgar Dearing
Second Tramp (uncredited)
George DeNormand
Arizona State Trooper (uncredited)
Don Dillaway
Jim Bagny (uncredited)
Stewart East
Clint Eastwood
Jet Squadron Leader (uncredited)
Jack Hendricks
Ranch Hand (uncredited)
Jane Howard
Jean - Professor Townsend's Assistant (uncredited)
James Hyland
Trooper Grayson (uncredited)
Tom London
Jeb - First Tramp (uncredited)
Robert Nelson
State Trooper (uncredited)
Eddie Parker
Paul Lund (uncredited)
Ray Quinn
Vernon Rich
Ridley (uncredited)
Robert Robinson
Charlie - Castle Rock Townsman (uncredited)
Bing Russell
Deputized Townsman (uncredited)
Robert R. Stephenson
Warehouseman (uncredited)
Jack Stoney
Pickup Passenger (uncredited)
Sailor Vincent
Billy Wayne
Murphy (uncredited)
Rusty Wescoatt
Pickup Driver (uncredited)
Bud Wolfe
Bus Driver (uncredited)
