"Sebastian Becker, a former policeman and Pinkerton agent who now works as the special investigator to the Masters of Lunacy, looking into cases involving any man of property whose sanity is under question. His latest assignment takes him to the small town of Arnmouth to determine whether Sir Owain Lancaster has gone around the bend."--Provided by publisher.

Escaping from custody after being arrested for the serial killings of pauper children, former boxing champion Tom Sayers, desperate to prove himself innocent and to reveal the true murderer, searches for the dark truth and ancient evil behind the murders.