在分租七楼房屋时,她意外爱上了新房客「伊藤阿满」,伊藤曾是她丈夫聘用的电脑程式设计师,由于伊藤处处关心她,凯蒂踏进爱情陷阱。费雯突遭谋害暴毙被弃置海边,这些日子凯蒂发现伊藤潜伏著危险、有暴力倾向,曾经使用手铐、铁练限制她的行动,且将他已过世的姐姐「治子」的声音、影像贮存在电脑中杀人,费雯就是他手中的牺牲者,凯蒂感到惊悸万分,随时有逃命的准备,但未成功。Kate is devastated when her rich husband dies. She thinks she has found someone to ease the pain but he is not what he seems. Kate must now fight for her life!