Witch Hunt - Stephen Leather

Supernatural detective Jack Nightingale has always dealt with unusual - and dangerous - cases. So when a serial killer starts killing victims using Witchfinder methods of execution, Nightingale is asked to help.

As the body count mounts, Nightingale realises that the killer is on a mission of revenge for acts committed four hundred years ago. And he and his assistant Jenny McLean are both on the killer’s hit list.