Official photos from the One Tree Hill crossover on Life Unexpected.

#17 Crossover Event

On the October 12 episode of Life Unexpected, One Tree Hill stars Bethany Joy Galeotti and Kate Voegele make an appearance as their Tree Hill characters, singers Haley James Scott and Mia Catalano.

Crossover Event

#16 “Music Faced”

Official Description: “This crossover episode of Life Unexpected brings One Tree Hill characters Haley and Mia to a music festival, sponsored by a Portland radio station and hosted by Ryan. At the concert, Haley and Cate meet and discover that they have incredibly similar pasts. It turns out that both women were somewhat nerdy, overachieving teenagers who got pregnant in high school by athletes named Nate (or Nathan). And when a secret of Cate’s gets outed, Cate turns to Haley for advice.”

"Music Faced"

#15 Haley and Cate

One Tree Hill’s Bethany Joy Galeotti and Life Unexpected’s Shiri Appleby

#14 Two Girls, Two Nates

In high school, Haley had a baby with Nathan and Cate had a baby with Nate, aka Baze.

#13 Mia and Ryan

One Tree Hill’s Kate Voegele and Life Unexpected’s Kerr Smith

#12 Mia from One Tree Hill

#11 Mia Performs

#10 Haley from One Tree Hill

#9 Haley Performs

#8 Musical Guest Ben Lee

#7 Musical Guest Rain Perry

#6 “Beautiful Tree”

Rain Perry is the artist behind the Life Unexpected theme song, “Beautiful Tree.”

#5 Baze and Emma

Kristoffer Polaha and guest star Emma Caulfield

#4 Cate and Haley Still Talking

Cate and Haley Still Talking

#3 Ryan Hosts the Music Festival

#2 Musical Guest Sarah MacLachlan

#1 “Forgiveness”

MacLachlan performs her new single, “Forgiveness.”

John Kubicek

Senior Writer, BuddyTV

John watches nearly every show on TV, but he specializes in sci-fi/fantasy like The Vampire DiariesSupernatural and True Blood. However, he can also be found writing about everything from Survivor and Glee to One Tree Hill and Smallville.