The Case of the Pardner in Crime C.O.P.S. : Season 1 Episode 3

Johnny Yuma, Sundown's ex-"pardner" and master train robber, escapes from prison for a revenge showdown with Sundown for putting him in prison in the first place. When he hears about what happened, Sundown goes off to face Yuma to convince him to turn himself back to the side of the law.