Shawn Shepard

Lucas is shocked to learn that Dan once asked Karen for joint custody of him when he was a baby.

Following his heart attack, Lucas returns to school, hoping to rekindle his romance with Peyton. Haley learns that Nathan was responsible for her accident.

When someone reveals the contents of the students' time capsule, Lucas and Mouth must confront a person from their past. Brooke has to deal with the revelation that secrets aren't the only things she exposed in the time capsule. Dan learns to forgive Keith. And Haley is forced to reconcile the man Nathan used to be with the man he has become. Meanwhile, Peyton's Breast Cancer Benefit Concert at Tric features performances by Haley and members of the bands JACK'S MANNEQUIN (themselves) and FALL OUT BOY (themselves).

Nathan and Haley grow closer, despite the recent scandal. Brooke wonders if a spark might be rekindled with Chase.

With the help of Bellamy and Sheriff Fred, Tom leads the charge in the search for Rachael, but her situation becomes increasingly dire as her captors grow more desperate. Maggie and Dr. Ward continue their medical research on the resurrected subjects and a series of shocking discoveries sets them on the brink of a game changing find, however, their focus shifts when Arcadia is suddenly in the throes of an epidemic.