即将拆除的塔楼，只剩下最后15位住户了。一个神秘狙击手nicktime和他的高动力、低噪音步枪，逐个瞄准枪击他们。没人听到枪声，没有任何外来帮助。如果受惊的受害者不能找到这个迷宫般塔楼的逃生之路，他们都将被一个接一个地枪杀。

故事描述女警官Catherine（Sarah Lancashire）带领一个调查组来到约克郡一处偏远的山谷调查一起绑架案，但很快发现案情线索复杂。在一连串多米诺骨牌式的事件发生后，这起案件引出了多起更加严重的犯罪。

Sarah Lancashire returns in the acclaimed BBC thriller written by Sally Wainwright. No-nonsense police sergeant Catherine Cawood is back heading up her team of dedicated police officers in the Calder Valley in West Yorkshire. While on duty, she makes a gruesome discovery – a body. The victim’s injuries bear a striking similarity to a string of other murders over the previous fe...