KAITLIN THROWS A RAGER ON �THE O.C.� THURSDAY, DECEMBER 7, ON FOX

When Seth visits Summer at Brown, he finds an empty dorm room, and Sandy and Kirsten find an opportunity to bond with Ryan, who is in a Taylor-induced haze. Kaitlin meets the mean girl of Harbor School and takes her down by throwing a rager at the Roberts house. Meanwhile, Julie Cooper learns that Newmatch is more than a dating service and the truth about Che comes out on �The Summer Bummer� episode of THE O.C Thursday, Dec. 7 (9:00-10:00 PM ET/PT) on FOX. (OC-406) (TV-14 L)

Cast: Peter Gallagher as Sandy Cohen, Benjamin McKenzie as Ryan Atwood, Rachel Bilson as Summer, Adam Brody as Seth Cohen, Kelly Rowan as Kirsten Cohen, Melinda Clarke as Julie Cooper, Autumn Reeser as Taylor Townsend, and Willa Holland as Kaitlin Cooper.

Special Guest Star: Chris Pratt as Che.

Guest Cast: Wayne Daglish as Brad Ward; Gary Grubbs as The Bullit, Brandon Quinn as Spencer; Kat Sawyer as Head Dean; and Ashley Benson as Riley.