After the grotesque revenge murder of her adopted son by a kiddie-porn ring, Detective Lieutenant Kay Boyd has a mental breakdown that plunges her into a deep depression. Now the undisputed "Meth King" of Boston, arch-criminal Joseph Xavier Null tries to convince Boyd that to cure herself she should join with him in his strategy to start at the top of the top of the ring-the Hebe Group-and kill their way down. At first she refuses, but Null...