Samantha and Alan are getting married, but William Haskins isn't pleased. He grabs a train south to London and begins shadowing Samantha as she tries to get on with married life. Haskins' attempts to frighten her drive Samantha to desperation, but she's having trouble convincing anyone that she's being stalked. Even her psychiatrist dismisses her concerns as part of her neurosis. As bodies begin turning up, Samantha's story becomes more believable, and her dark secret from the past begins to reveal itself. 萨曼莎和艾伦要结婚了，但威廉·哈斯金斯并不高兴。他抓住一辆开往伦敦的火车，开始尾随萨曼塔，因为她想要继续婚姻生活。哈斯金斯试图恐吓她，把她逼到绝望的地步，但她很难让任何人相信她被跟踪了。就连她的精神科医生也不把她的担心当成神经症的一部分。当身体开始出现时，萨曼莎的故事变得更加可信，而她过去的黑暗秘密也开始显露出来。
