Witch Hunt/The Whisper Man

Witch Hunt: 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. The Whisper Man: When Nightingale hears about a rash of suicides across London, he realises that it's more than a coincidence. Something has come from the bowels of Hell to wreak havoc in the world, and only he can stop it. But to do that he'll have to put his own soul on the line.