在Rosie Larsen的案子结束一年之后,Sarah Linden已经辞去了警察的工作。但是她的前搭档在Stephen Holder一次寻找失踪少女的案件中,无意间发现了一系列恐怖的谋杀案,而这些谋杀案都指向了Linden曾经调查过的另一件案件。Linden不得不拾起旧事,重温当时的梦魇……Detective Holder and his new partner investigate the murder of a 16 year-old hooker who was stabbed and had her throat slit. The medical examiner determines that she has defensive wounds and the knife used had a serrated edge. He and his new partner have had a good year solving all seven murders they've investigated. Holder has also given up some of his bad habits and will soon be writing his sergeants exams. Holder notices a similarity between this death and one that Sarah Linden investigated a few years before. In that case, Ray Seward was convicted of killing his wife Tricia Ann and is now on death row awaiting execution. Holder visits her to discuss the case but she's not keen to reopen a case she solved three years ago. She now works for the Seattle ferry system and has a new boyfriend. All in all, her life is good. As she reviews Holder's case file however, she is slowly drawn in.