The Virginian Season 8 Episode 15 You Can Lead a Horse to Water

Sheriff Abbott sends Trampas to Clearwater as a deputy to return Luther Watson wanted for stealing horses. The two of them are on the stage with Mary Marshall who is a very talkative southern belle. After the stage is robbed, she forces Trampas and Luther at gunpoint to trail the thieves one of whom is the stagecoach driver. During the search for the thieves, Mary matures and Luther's knowledge of horses plays a key role in recovering Mary's dowry.