Guilty over not having helped Parker, Veronica pursues the Hearst serial rapist by going undercover at the Theta Beta sorority during rush week. Parker's parents arrive, intending to take her home. Wallace and Logan participate in a guard/prisoner experiment for sociology class. On the night she was raped, Parker was taken back to her dorm room by a resident assistant because she was too intoxicated to get back herself. Veronica also learns that someone from Theta Beta could have had access to the keys to Parker's dorm room.