Burning Down the House

Burning Down the House is the eighteenth episode in Season 4 of Heartland. It aired March 13, 2011.

Summary
Tim and his girlfriend announced that they are selling the ranch and moving to California. But one of Tim's old girlfriends comes back and claims that Tim is the father of her son, Shane. And a paternity test says that he is. Ashley finally comes home. Ty is still having trouble just being friends with Amy. Ashley decides to go to school in British Columbia and Caleb is not sure if to go or to stay.