Peter was a Saint - S3.E6

A boy comes to stay with the Campbells saying he's James' nephew but really he's a thief looking to mend his ways. James thinks his nephew has come to live with him and pick up a teenage boy. At home, he adapts to farm life. After he arrives, area neighbors start being robbed. Peter is being blackmailed by a Scriver, his friend in the city, into stealing but Peter wants an honorable life and he confesses all are returns the goods.