Can't Stop This Thing We've Started

S4 E4: Peyton introduces hip-hop sensation LUPE FIASCO (himself) at the nightclub Tric, while rumors that Brooke is pregnant run rampant. Still dealing with the car accident, Nathan buys a motorcycle, despite Haley's reservations. Meanwhile, Lucas clashes with Derek (recurring guest star MATT BARR - "Commander in Chief"), a newcomer who is very interested in Peyton, and Deb double-crosses Karen. Also, Rachel (recurring guest star DANNEEL HARRIS) poses for Maxim magazine.