The Rifleman - Season 1 Episode 3
End of a Young Gun

Lucas is forced to give refuge to Will Fulton, a young bank robber, who was injured while saving Marks life. While staying at the McCain ranch Will gets a taste of a life better than the one hes been leading. Hes met a girl and grows tired of a life on the run. Will this young man have a change of heart before his brother returns for him and the stolen money?