还在念高中的Sarah正值低潮，她逃家却发现自己没有人可以依靠，同时又被反复出现的可怕恶梦所苦。很幸运的，正好有一所大学在进行睡梦研究，Sarah不但可以安全地睡觉，还可以获得报酬，更意外的和负责研究实验的科学家Jeremy（蓝顿莱柏隆饰）成了知心好友。参加实验让Sarah的恶梦更加剧烈，梦中的影子生物似乎更加强大。随着黑暗的脚步越来越接近，Sarah在不知不觉中成了一个可怕新发现的连接管道……。

It follows Becca, a forensics expert who, when investigating a murder, realizes that the body of the victim looks exactly like her.

The novel follows a woman, Modesta, who is born on 1 January 1900 and her experiences though her life in the twentieth century. The text is written for the most part in the first person (by Modesta), but sometimes also in the third person, especially in the first part of the novel.