THE NEW KIDS SETTLE IN ON "THE O.C." THURSDAY, NOVEMBER 18, ON FOX

Seth gets some help from Alex to prove that his friends don't know him as well as they think. Meanwhile, Summer gives some thought to how she really feels about Seth after she learns new information about Zach. Marissa is happy to share an evening with Ryan. But at school, Ryan finds himself embarrassed and frustrated after a run-in with new classmate Lindsay. Caleb's legal problems threaten to leave both Sandy and Kirsten unemployed as Julie makes sure she stays on top even if Caleb goes down on "The New Kids on the Block" episode of THE O.C Thursday, Nov. 18 (8:00-9:00 PM ET/PT) on FOX. (OC-203) (TV-TBA)

Cast: Peter Gallagher as Sandy Cohen, Benjamin McKenzie as Ryan Atwood, Mischa Barton as Marissa Cooper, Rachel Bilson as Summer, Adam Brody as Seth Cohen, Kelly Rowan as Kirsten Cohen, Tate Donovan as Jimmy Cooper, Melinda Clarke as Julie Cooper, and Alan Dale as Caleb Nichol.

Guest Cast: Michael Cassidy as Zach, Shannon Lucio as Lindsay, Michael Nouri as Neil Roberts, Perry Anzilotti as Mr. Greenburg, and Olivia Wilde as Alex.