Gene Barry
Clayton Forrester
Ann Robinson
Sylvia Van Buren
Lewis Martin
Matthew Collins
Les Tremayne
General Mann
Frank Kreig
Fiddler Hawkins (uncredited)
Vernon Rich
Ralph Heffner
Sandro Giglio
Dr. Bilderbeck
Ann Codee
Dr. Duprey (uncredited)
Robert Cornthwaite
Dr. Pryor
Cedric Hardwicke
Commentary (voice)
Houseley Stevenson Jr.
General Mann's Aide
William Phipps
Wash Perry
Jack Kruschen
Salvatore
Paul Birch
Alonzo Hogue (uncredited)
