Don't Get Mad, Get Even - S2-E21
Plot hole: In the bath house at the beginning, Heyes and Curry, who should be using their aliases, call each other by their real names several times while the proprietor, who's a stranger to them, is preparing hot water nearby. The man must not be up on "the two most successful outlaws in the history of the west," though: he doesn't race off to turn them in and collect the reward. (00:04:40)