
Shuddery things from beyond the stars, here to breed with human women!
Aliens from Outer Space are slowly switching places with real humans -- one of the first being a young man about to get married. Slowly, his new wife realizes something is wrong, and her suspicions are confirmed when her husband's odd behaviour begins to show up in other townspeople.
Tom TryonBill Farrell
Gloria TalbottMarge Bradley Farrell
Alan DexterSam Benson
Jean CarsonHelen Rhodes
Ken LynchDr. Wayne
Maxie RosenbloomMax Grady - Bartender
Peter BaldwinOfficer Hank SwansonJack OrrisonOfficer Schultz
John EldredgePolice Capt. H.B. Collins
Robert IversHarry PhillipsChuck WassilTed Hanks
Ty HardinMac Brody (as Ty Hungerford)
Valerie AllenFrancine - Hooker
Mary TreenMother Bradley (uncredited)
James AndersonWeldon