The O.C.: The O.Sea

Ryan tries to find out the truth about what went down between Marissa and Trey even as the prom approaches. He finds Trey in Chino and Trey says that Marissa jumped him, but afterward Ryan runs into Theresa and she tells Ryan to believe Marissa. Summer tells Zach and Seth to decide between themselves who will take her to prom. Reed tells Zach and Seth to decide between themselves who will take a meeting with George Lucas. Zach gets the prom date, Seth gets George Lucas and they both realize they want to be where the other person is. Sandy confronts Kirsten on her drinking. Julie plans on drugging Caleb to avoid the divorce, but she reconsiders when she spends time with him. As she steps away, Caleb suffers a heart attack. Sandy answers a call from Julie and tells Kirsten that Caleb died. Kirsten walks away with a bottle of liquor.