Life Unexpected

East Coast meets West Coast, as two One Tree Hill characters head for Life Unexpected in a musical crossover, airing at 9/8c on the CW.

VIDEO: Life Unexpected's Britt Robertson says Lux's crush weaves in and out of her life

While there is plenty of drama throughout the episode — including possible additions to the already burgeoning family, boyfriend woes and new relationships — behind the scenes, the cast weathered rain while being entertained by Sarah McLachlan and Ben Lee, among others.

Check out our photo gallery of the crossover and get insights from the cast on their day of filming.