Elenco - A Invasão dos Discos Voadores
Hugh Marlowe
Dr. Russell A. MarvinJoan Taylor
Carol MarvinDonald Curtis
Maj. HuglinMorris Ankrum
Brig. Gen. John HanleyThomas Browne Henry
Vice Adm. EnrightGrandon Rhodes
Gen. EdmundsJohn Zaremba
Prof. KanterPaul Frees
Alien (voice)Frank Wilcox
Alfred CassidySydney Mason
Frank the garage manLarry J. Blake
Motorcycle copBert Stevens
Air Intelligence Command OfficerForbes Murray
Military Officer at ExperimentArthur Tovey
Officer/Civilian at Military ConferenceAlan Wells
Major KimberlyNicky Blair
Military Officer at Experiment (uncredited)Jimmy Cross
Military Messenger (uncredited)Jack Deery
Military Officer (uncredited)Charles Evans
Dr. Alberts (uncredited)Raoul Freeman
Military Official (uncredited)James Gonzalez
Military Official (uncredited)Duke Green
Minor Role (uncredited)Ed Haskett
Military Official (uncredited)Clark Howat
Sgt. Nash (uncredited)Harry Lauter
Cutting - Generator Technician (uncredited)Don Marlowe
Minor Role (uncredited)William Meader
Worker in Control Tower (uncredited)Sol Murgi
Plane Passenger (uncredited)William J. O'Brien
Radio Listener (archive footage) (uncredited)Murray Pollack
Plane Passenger (uncredited)Mike Ragan
Tank Commander (uncredited)Alan Reynolds
Maj. Kimberly (uncredited)Dale Van Sickel
Man Crushed Beneath Wall (uncredited)Guy Way
Civilian Observing Saucer Attack (uncredited)Bob Whitney
Plane Passenger (uncredited)Beal Wong
Chinese Radio Listener (uncredited)