S2, E22: Since Carter's departure, Kirsten has been drinking more than just tomato juice for breakfast, and when Sandy questions her, he's left to sleep alone in the bedroom. Marissa's nervousness around Ryan leads him to wonder if something has happened between her and Trey (recurring guest star LOGAN MARSHALL-GREEN). Summer, tired of Seth and Zach (recurring guest star MICHAEL CASSIDY) behaving foolishly, confronts Reed (recurring guest star MARGUERITE MOREAU) about the graphic novel and finds herself center stage at the Atomic County launch party. Meanwhile, Caleb shows Julie that a picture is worth a thousand words.