He and Allison's father, Chris, leave Beacon Hills in order to find some emotional healing, and Isaac never returns. Although Isaac made an impact on the show, he was never a central character.

Does Isaac return in Season 5?

Jeff Davis, executive producer for the show, told E! Online: "Isaac is not returning next season. That's going to be a big surprise for a lot of people."

What season does Isaac Lahey come back?

"Teen Wolf" gets more intense and thrilling as time passed by.