Terror from the Year 5000 (1958)

Synopsis
The Terror from the Year 5000 works its way to the 20th century by way of a time machine. On a remote island near Florida, scientist Howard Erling (Frederick Downs) uses an elaborate time-travel device to trade various artifacts with denizens of the Past and Future. A woman from the future, the mutated victim of atomic radiation, "trades" her body with that of a nurse (Salome Jens) whom she murders. It is the Future Woman's intention to repopulate the post-apocalyptic world of 5000 AD with uncontaminated children, and to do this she must forcibly take Erling's assistant Victor (John Stratton) "back to the future". Curiously, well-known Broadway actress Salome Jens, who plays the title character, wasn't listed in either the advertising or the official resumés of Terror From the Year 5000. ~ Hal Erickson, All Movie Guide