The Amount of Evil: The Edmonton Police Station Thrillers, Book 4 (Unabridged‪)‬

Influential businessmen are being slaughtered across London; each victim is given a local anaesthetic before witnessing his own body being cut to pieces. The decapitated head is then stuck on a pole as warning that revenge is being reaped. But, revenge for what? And, who will be next?  

DCI Jairus is put in charge of the case. He's a resourceful detective, living with guilt after killing a suspect in self-defence. He soon discovers the murders are being committed by a sadistic psychopath and a delusional and violent ex-con, but Jairus himself hides a dark secret in his lock-up...something no one can learn the truth about. 

The troubled DCI finds himself drawn into a world of satanic rituals, secret societies, and deadly revenge. And as Jairus investigates, his gut tells him that someone else is orchestrating the murders.