Neil Stryker

Glenn Corbett

Acting

George Benedict

Cameron Mitchell

Acting

Dr. Bettina Cooke

Sharon Acker

Acting

Prof. Dylan MacAuley

Lew Ayres

Acting

Max Greene

George Coulouris

Acting

Carl Webster

Dean Jagger

Acting

Henry Maitland

Steve Franken

Acting

Dr. Revere

Tim O'Connor

Acting

Steve Perry

Jerry Douglas

Acting

Mike Frome

Arch Whiting

Acting

Eric Stoner

H.M. Wynant

Acting

Truck Driver

William Bryant

Acting

Ward E Administrator

Virginia Gregg

Acting

Guard

Steven Marlo

Acting

Tom Nelson

Buck Young

Acting

(uncredited)

William Harlow

Acting

Doctor

Ben Wright

Acting