 Lucas feels he should come to Karen s pregnancy check-ups as often as Keith would have done, she tells him to go to school, it makes her nervous. In the waiting room he finds a battered-up whorish girl who throws her jacket to him when he remarks it seems Peytons; it is, so he concludes Derek must have taken it at Tric and stabbed the unknown, but she refuses to hear bad about her half-brother; Derek is watching them from a bridge; only after getting e-mails supposedly from Lucas and a visit when Derek stresses how much they mean for each-other she checks his hotel-room and finds scary indications, which she confides in Lucas. Nathan has great news: Duke offers him a full scholarship; just then Haley announces her pregnancy, not Brooke, he asks if she still plans on Stanford and prompted for his feelings says she should have told him earlier. She asks Dan to talk to Nathan, and he does- warning she has no right to deny him following his lifelong basketball-dream after he allowed here touring; for once he takes Dan s advice. Brooke meets and falls for sexy Nick Chavez, ignoring he s a new teacher. Nathan calls a press-conference where mayor Dan presents him, and in vain expected Deb to come, if sober; Rachel is completely at his side; yet he only tells his decision will be made in concert with bis pregnant wife. The police, which Lucas asked to investigate, calls Lucas away having arrested Derek Sommers, but at the station he finds that s a colored kid, and phones Peyton, who finds  her  Derek has just arrived; she uses mace and locks him out, but he has already cut off the telephone and breaks in; just when he enters her room, Lucas arrives but is tazer-struck down; only the other Derek, who assures to be her real brother, can help push the fake Derek trough the window...