Welcome to Blood City(1977)

movie - first aired/released 1977-03-03 - audience 5.4

Directed by Peter Sasdy

Five strangers awake, finding themselves with no memory in a world resembling the wild west. Their task is to become exempt from being killed - what the townspeople refer to as being "immortal" - by killing twenty of the other inhabitants of the town under the scrutiny of the sheriff (Jack Palance), otherwise they will spend their lives in slavery.