 When Sun is nearly kidnapped and seriously injured, the rest of the castaways assume the Others have broken their agreement to keep away. However, Kate begins to suspect that one of their own may have had to something to do with it in a bid to scare them in to taking up arms against The Others. Meanwhile, in the Sawyer-centric flashback set some years earlier, the charming and sociopath Sawyer s latest con is foiled by his victim, a troubled divorcée named Cassidy. But she s more interested in learning his ways than turning him in to the authorities.