Half Life is the sixth episode of the Logan's Run television series. It first aired 31 October 1977.
Attacked by a band of primitives, Logan, Rem and Jessica are saved by people who call themselves positives. They live in a society that has found a way of splitting out all their negative side into a second body and banishing them from paradise. Jessica is split and her bad side cast out, but Rem and Logan are not about to let this state of affairs continue.