From the Edge of the Deep Green Sea

S3 E2: Brooke organizes a beach party to celebrate the end of summer but soon finds she's the only one in a party mood. Nathan comes home to reconnect with Haley, but now he and Lucas aren't getting along. Meanwhile, Lucas struggles with Brooke's new rules for dating, and Peyton tries to come to terms with the newly discovered secrets about her family. Finally, Dan remembers what happened the night of the fire at his dealership.