Sarah McLachlan: 'Life Unexpected'/'One Tree Hill' Crossover Guest Star!

Sarah McLachlan will make a guest appearance in the crossover episode of the CW shows Life Unexpected and One Tree Hill to perform her new single “Forgiveness.”

The 42-year-old singer will star alongside other guest performers in the episode, One Tree Hill‘s Bethany Joy Galeotti and Kate Voegele, as well as the singer-songwriters of the Life Unexpected theme song, Ben Lee and Rain Perry.

In the crossover event, One Tree Hill characters Haley (Bethany) and Mia (Kate) go to a music festival sponsored by a Portland radio station where they meet Cate (Shiri Appleby), whom Haley makes a connection with.

The Life Unexpected/One Tree Hill episode airs Tuesday, October 12 at 9/8c on The CW!