Episode 53 of 82 centers around Kate and central part in the on island love triangle of her, Jack & Sawyer. Kate is taken to where Jack is being held and tells him he has to operate on Ben to save him or they will kill Sawyer. Jack refuses. She figures out a way to climb out of her cage and breaks into Sawyer’s. They end up doing the deed, but Jack “happens” to see them on a security camera. Thinking that Kate cares for Sawyer he agrees to operate to spare Sawyer after all. Very soap opera-ish episode in that regard.
In the off island flashback Kate, or Monica as she known here, falls in love with a cop named Kevin while still a fugitive and on the run. Our groom is played by none other than Captain Tightpants, Nathan Fillion from Firefly. In the end Monica can’t really stay married, so she has to leave. She drugs Kevin’s iced tea and runs from him. I can only hope that the producers just thought of trying to work in a way for Kate to have the knock out drugs on her lips and kiss him, like Mal had Saffron do to him in the Firefly episode “Our Mrs. Reynolds”, before dismissing it.