the hospital. Allison asks Casey if he will ever be able to be friends with her and trust her again and he says he does not know. Meanwhile, Chris returns from Africa about becoming ill and getting well. Katie sees this as an opportunity to set Ali and Chris up again. They end up going on a date but Katie accidentally backs into Chris when she sees him and Alison about to kiss. While on medication and beer from his injury from the hit, Alison hears Chris admit his love and admiration for Katie, which he mistakes her to be in his drunken and doped up state. She confesses to Katie to quit trying to set her up with Chris because his interests is elsewhere and not with her. Casey sees Chris and Ali getting closer and starts a fling with Vienna Hyatt. She is merely using him to get pregnant and trick Henry Coleman to marry her once she sees that he is in love with Barbara Ryan. After they almost get caught by Henry in Vienna's room, Casey finds a bag full of pregnancy tests and suspect that she is pregnant with his child. When he keeps asking her if she is pregnant and not getting a straight answer he decides to investigate himself. After he ca not find the doctor's name in the hospital records, he asks Alison to help him with his situation. She accepts but it is clear she is pained at the fact that Vienna may be pregnant with his child. After much research they discover that Vienna is indeed pregnant but the baby cannot be Casey's because from her medical records, she was already with child when Casey had sex with her. Casey thanks Alison for her help and they start to get closer again. They find out that Vienna never was pregnant and that her medical records were falsified by Katie to help her in her plan to trap Henry. Will and Gwen returns to try to search a missing Barbara and during a barbecue Casey and Will discuss parenthood and marriage, while Gwen and Allison discuss the same thing in a separate room. They both realize that they are still in love with each other and want to try it again. Casey proposes to Allison again and she accepts. She wants to run away to get married in Las Vegas but