The Brain That Wouldnt Die (1962)

Dare Rudd and Dinkey Hooley, roaming cowhands, drift into Montana, where they meet Dare's cousin, Tom Fillmore, cattleman and banker. Tom offers them jobs but they pass, until Dare sees Tom's sweetheart, Judy Worstall and decides to take the job. He is put in charge of a cattle drive, replacing ranch-foreman Lynn Hardy, who is in cahoots with Bart Hammond, rustler. Dare delivers the cattle to the railhead and is about to return when he is persuaded into a poker game by Buck Brady, a crooked gambler. Dare is almost cleaned out when Tom appears and takes a hand and discovers the dealer is switching decks.