When the killings started, Chief Inspector Stern and his team believed another sick and twisted killer was stalking the streets of London looking for their next victim until evidence started to point to something more evil. As Stern desperately tries to find a pattern or a motive to the murders he discovers a secret government department is trying to infiltrate his investigation. Why? Callum Ogilvy knows the answer. As lead investigator for the Department of Paranormal Research, he suspects they have little time left before the ancient force driving the killings strikes again.