Neil Stryker

Glenn Corbett

George Benedict

Cameron Mitchell

Eric Stoner

H.M. Wynant

Truck Driver

William Bryant

Ward E Administrator

Virginia Gregg

Guard

Steven Marlo

Doctor

Ben Wright

Tom Nelson

Buck Young

(uncredited)

William Harlow

Dr. Bettina Cooke

Sharon Acker

Prof. Dylan MacAuley

Lew Ayres

Max Greene

George Coulouris

Carl Webster

Dean Jagger

Henry Maitland

Steve Franken

Dr. Revere

Tim O'Connor

Steve Perry

Jerry Douglas

Mike Frome

Arch Whiting

Director

Lee H. Katzin

Writer

Gerald Sanford