Pilar forces Katie to leave with her at knifepoint and takes her to the boathouse where she intends to kill her. Henry and Simon discover Katie is missing and while Simon goes out to look for her, Henry contacts Mike. Mike calls Pilar on her cell phone and figures out her location. As Pilar is about to get her revenge, Mike arrives. While Mike distracts Pilar, Katie pushes Pilar down and she falls on her knife and dies. Simon shows up to find Katie in Mikes arms. Later, Mike tells Margo that he lost Katie because he didnt believe her about Pilar. At home, Katie questions Simon about his relationship with Pilar. At the party, Tom finally confronts Margo about Doc. Margo denies having done anything wrong, but Tom can tell she is hiding something. At home, Tom asks if Margo is intrigued by Doc because their marriage is boring to her. When Margo finds out about Katie, she blames Tom for keeping her from helping her sister. Jessica arrives and tries to persuade Tom to give up pushing Margo about Doc. Tom insists he cant give up until he knows the whole truth. Meanwhile, Kim threatens to fire Doc if he interferes with Margo and Toms marriage. Seeing Tom and Margo fighting has made Chris realize that he wants to hold on to Alison and what they have. He asks her to marry him. Carly learns that Rosanna is allowing Jordan to move in to Fairwinds and doesnt think its a good idea. After, Paul tells Rosanna that he wants to be the one to look out for Rosanna and Cabot. Later, Jordan finds out that Rosanna has decided to allow Paul to move into the house, too.