James Craig

as Dr. Haines

as Cyrus

as Bo Greer

as Dr. Bragan

as Tom Sabin

as Russ Bradford

as Ep Clark

as "Honest" Harry Kritzer

as Maj. Clay Clayburn

as Delwyn 'Sonny' Johnson

as Chief Frank Westlake, INS

as George Garsell / Mr. Howard

as Nels Halverson

as Caliph

as Lloyd X. Hunter

as Tom Spangler

as Jabez Stone

as Mark

as Ensign

as Swindler Driving Car (uncredited)

as Juror Watkins

as Joe