On their second date , Harmony suggest that they have sex , but Keith decline the proposal . On the way back , Keith ’ s become involved in a traffic collision , but the airbag catch him . This traumatic experience make him go back to Harmony , and they sleep together . Veronica talk to Tim Foyle , who made her follow the trail of " Rory Finch " deliberately in order for her to discover the professor ’ s affair . Tim was the professor ’ s protégé , and he want Veronica to discover Hank 's flaws before she become more involved with him . Logan run up to Veronica and tell her that Mercer have been arrested for the rapes on campus , despite the fact that he believe that Mercer is innocent . Logan beg Veronica to defend Mercer , as he was with him the night of one of the rapes . However , he refuse to tell Veronica what they was doing .