Last Woman on Earth (1960)

Ev, along with her husband, Harold, and their lawyer friend Martin, are swimming while on vacation in Puerto Rico. When they resurface, they gradually conclude that an unexplained, ... See full summary »

Director:

 Roger Corman

Writer:

 Robert Towne (screenplay)

Stars:

 Betsy Jones-Moreland, Antony Carbone, Robert Towne - via IMDB 

https://archive.org/details/last_woman_on_earth