Josh Kloss

Kirsten doesn't want Ryan permanently, so he buys a bus ticket. Ryan, Seth and Marissa hide in a model home, but Summer finds out and causes trouble with a bully who fights Ryan.

Kirsten takes temporary custody of Ryan. Jimmy borrows money from Kirsten. Summer uses Seth for good luck at a casino benefit. Ryan's mom drunkenly embarrasses him and then leaves.

Summer is secretly jealous of Seth's relationship with Anna. Sandy works on a lawsuit against Caleb's company, bothering Kirsten even more. Ryan fights with Luke over Marissa.

Marissa and Ryan begin dating. Summer tries to deny her feelings for Seth as he gets closer with Anna. Kirsten and Sandy continue to clash. Julie reveals a new relationship.

When Seth tries to choose between dating Summer (recurring guest star Rachel Bilson) or Anna (recurring guest star Samaire Armstrong), he ends up in the middle of a very complicated situation. Meanwhile, Ryan visits his brother, Trey (recurring guest star Bradley Stryker), in prison, accompanied by Marissa. When Julie (recurring guest star Melinda Clarke) finds out that Marissa is with Ryan in Chino, she becomes furious. As everyone nervously waits at the Cohen house for Ryan and Marissa to return, tensions mount, making the holiday a Thanksgiving to remember.