|← S1||The OC Season 2||S3 →|
|#01||"The Distance"||#09||"The Ex-Factor"||#17||"The Brothers Grim"|
|#02||"The Way We Were"||#10||"The Accomplice"||#18||"The Risky Business"|
|#03||"The New Kids on the Block"||#11||"The Second Chance"||#19||"The Rager"|
|#04||"The New Era"||#12||"The Lonely Hearts Club"||#20||"The O.C. Confidential"|
|#05||"The SnO.C."||#13||"The Test"||#21||"The Return of the Nana"|
|#06||"The Chrismukkah That Almost Wasn't"||#14||"The Rainy Day Women"||#22||"The Showdown"|
|#07||"The Family Ties"||#15||"The Mallpisode"||#23||"The O.Sea"|
|#08||"The Power of Love"||#16||"The Blaze of Glory"||#24||"The Dearly Beloved"|
Kirsten hits rock bottom after Caleb's funeral, prompting Sandy to stage an intervention. Meanwhile, Jimmy Cooper returns to Newport and renews ties with a mourning Julie, while Hailey Nichol returns to town for the funeral. Trey's girlfriend/partner-in-crime Jess bullies him into participating in a drug deal that turns into a shootout at the Bait Shop nightclub. Also, Ryan learns the truth about what happened between Trey and Marissa, leading to a bloody confrontation.
Seth wakes up depressed about the sudden death of his grandfather. While in his dad's office, he comes across a brochure for rehab. He questions Ryan about it, asking if he thinks his dad would need rehab. Ryan replies that he doesn't think it's Sandy who needs rehab.
The Cohen family gets ready for the funeral, and Kirsten reunites with her younger sister Hailey. Meanwhile, at the Cooper-Nichol residence, Marissa attempts to be nice to her mother. The doorbell rings, and the man standing in the doorway is Jimmy Cooper, back to help his family. Sandy tours a rehab centre for Kirsten and talks to a doctor who answers questions about the facility.
Seth confronts his father about wanting to send his mother to rehab. Sandy has a hard time explaining it to him and Seth does not agree with sending her away, but later Sandy goes to Seth's room and they come to an understanding. Sandy realizes Kirsten needs serious help, and a doctor tells him to stage an intervention. Sandy gets Hailey to take Kirsten out for a day at the spa. When they return home, the doctor, Sandy, and Ryan are waiting in the kitchen to talk. The doctor tells Kirsten that all of them think she has a problem, and Kirsten goes into denial.
Ryan and Seth are in the pool when an upset Summer arrives needing to talk to Seth about something important. She tells Seth that while he and Ryan were in Miami, Trey tried to rape Marissa. Seth then tells Ryan, who goes to Trey's apartment. At the mansion on the hill, Jimmy tells Marissa that he and Julie are going to try to work things out and hopefully become a family again. Marissa is happy and hugs her mother, then gets a phone call from Summer and Seth telling her that Ryan is after Trey. Marissa rushes to Trey's apartment where Ryan and Trey are fighting. Marissa tries to get Trey off of Ryan, but he pushes her away. She thensees Trey's gun on the floor. Trey rips the telephone out of the wall and lifts it, ready to bash Ryan with it. Behind him, Marissa holds the gun and pulls the trigger. Blood trickles out of Trey's mouth and out of a hole in his chest. Summer and Seth get to the apartment where a scared Marissa is whimpering in the corner and an exhausted Ryan is just getting up from being almost beaten to death.
- "El Manana" by Gorillaz
- "Crosses" by Jose Gonzalez
- "Hide and Seek" by Imogen Heap
- "You're Not The Law" by The Dead 60's
- "An Honest Mistake" by The Bravery
- "Hot Ride" by The Prodigy
- "Friends" by Ryan Adams & The Cardinals
- "Twenty Two Fourteen" by The Album Leaf
- Peter Gallagher as Sandy Cohen
- Kelly Rowan as Kirsten Cohen
- Benjamin McKenzie as Ryan Atwood
- Mischa Barton as Marissa Cooper
- Adam Brody as Seth Cohen
- Melinda Clarke as Julie Cooper
- Rachel Bilson as Summer Roberts
- Alan Dale as Caleb Nichol (Mentioned Only)