Shaun Cozzens

The gang get the chance to have a few heart-to-hearts when they're accidentally locked in a mall for the night. Marissa and Summer catch up about the state of their current love lives, while Seth tries to help Ryan get over Lyndsay's departure.

Seth spreads gossip, and Marissa is feeling suffocated in her relationship with Alex.

A new arrival at Newport Beach causes a stir, while Julie causes a stir of her own when her past finally catches up with her. Meanwhile, Kirsten and Carter grow closer, and Zach returns from his holiday claiming to be totally over Summer.