John Agar
Dr. Matt Hastings
Acting
Mara Corday
Stephanie 'Steve' Clayton
Acting
Leo G. Carroll
Prof. Gerald Deemer
Acting
Nestor Paiva
Sheriff Jack Andrews
Acting
Ross Elliott
Joe Burch
Acting
Hank Patterson
Josh
Acting
Eddie Parker
Paul Lund / Eric Jacobs / Airport Workman
Acting
Bert Holland
Barney Russell
Acting
Raymond Bailey
Dr. Townsend
Acting
Steve Darrell
Andy Andersen
Acting
Edwin Rand
Lt. John Nolan
Acting
Clint Eastwood
Jet Pilot
Acting
Wag Blesing
Townsman
Acting
Dee Carroll
Telephone Operator (uncredited)
Acting