Old TV Western memories needed

A couple of old TV Westerns (and Western-style mystery episodes) used that “man disguised as a woman on the trail” twist. The one most people think of is an episode of Zane Grey Theatre called “Trail to Nowhere” (CBS, 1958): The story has a small wagon party crossing rough country. Travellers begin dying mysteriously. Suspicion shifts around the group until the “girl” turns out to be a young outlaw in disguise. A similar plot later turned up in the anthology series Death Valley Days (episode “Girl on the Road,” 1960s) and in a few early-1960s Westerns like Laramie or Wagon Train where a character in female dress is revealed to be a fugitive male killer. If you’re sure it played almost like a whodunit—wagon train or stagecoach stranded, people picked off one by one, and a big “unmasking”—your best bets to check are: Zane Grey Theatre – “Trail to Nowhere” (Season 3, 1958) Death Valley Days – “Girl on the Road” (mid-1960s) Laramie – “The Runaway” (1960) has a boy passing as a girl but not the serial-killer angle; sometimes confused with the above.