Ivan Bonar

as Dr. Ridley

as Mr. Griffin

as John

as Gas Station Attendant

as Thorne Abbott

as Howard Hawks

as Doctor at Prison

as Patterson

as Dr. Carson

as Judge Wheeler

as Chalmer

as News Alert Reporter

as Judge F.F. Carlson

as Edwin Shirley

as Lt. Gen. Richard K. Sutherland

as Russ Whitman

as Brogan

as Colonel to Dunbar

as Man with Tape Recorder at Hospital (uncredited)

as Roger Campbell

as Col. Cowen

as Nogrady (uncredited)

as Silverstein (uncredited)

as Assemblyman Potter

as Dr. C. F. Sears

as Jacobs

as Oliver Dunning

as Judge

as Dean Houseman

as Wilmont Oliver

as Ackerman

as His Lordship

as Committee Chairman

as Jeffrey

as Dr. Elliot

as Carter Hendricks

as Smiley

as Paolo Visconti

as Mr. Perry

as Mr. Wilson

as Dale Jurgenson

as 1st Senator

as Colonel Anders

as Reverend Depugh

as Simon Grossland

as Lancaster

as Manager

as Surgeon

as Judge

as Dr. Haley

as Harold Spring

as Fred

as Leroy Lowenfeld

as Mr. Stedman

as Dr. Adam Nelson

as Mr. Bronson

as Older Alien

as Policeman

as Personnel Manager

as Physician

as Announcer

as Osborne

as Tolliver

as Desk Clerk

as Felix

as Detective

as Major Domo

as Mr. Lyons

as Mr. Breckenridge

as Mr. Dunham

as Minister

as Patrolman

as Det. Marlowe

as Hotel Carlton Bartender

as Clerk