故事发生在囚犯袭击Elias Voit的六个月之后，他在暗网上的追随者开始在全国各地大肆搞破坏。为了阻止这个邪恶的组织杀害更多无辜者，BAU不得不与越来越难以预测、有自己目的的Voit进行合作。

　　警探和嫌犯在气氛紧张的审讯室里展开一场场心理游戏。寻找答案有时需要付出道德的代价。

During a visit to friends, Sara begins having visions and is attacked by an unearthly creature in her friend's swimming pool; she soon discovers that anyone who comes into contact with the water is in danger and she is driven to confront the mystical and malevolent creature lurking in the depths.