Mark Miner and his younger brother Matthew join the wagon train after making it appear their own wagon has broken down. The passengers of the train enjoy Mark's guitar and singing, but soon items and money begin disappearing. What they don't realize is that the two brothers want to frame Duke Shannon for the thievery, because they blame him for the imprisonment of their father and want revenge for it. 

Lizbeth Ann Calhoun meets the wagon train staff as they stop for supplies. She asks permission to join the train so she can avoid the advances of a young man she claims is in love with her, however his real motives may be very different.

Note: This episode was filmed and shown in color.