Magnum, P.I. (1980): Season 2, Episode 21

2 - 21: The Elmo Ziller Story

Magnum meets Higgins' illegitimate half-brother, a swaggering Texan named Elmo Ziller, who was supposedly murdered. Now, Ziller's daughter asks Magnum to protect her father from ruthless killers, while Ziller asks Magnum to prove that his wife is trying to murder him. Meanwhile, Magnum can't help thinking that Higgins and Elmo are one and the same.