Felix Castor Series

The series begins with the 2006 novel 'The Devil You Know,' written by Mike Carey. It introduces Felix Castor as a freelance exorcist operating in modern-day London. The book establishes the series' gritty, supernatural take on the classic noir detective genre.

Felix Castor works as a freelance exorcist in a London where the supernatural is a known, albeit often ignored, reality. He uses his skills to lay ghosts and bind demons for paying clients. He operates on the fringes of society, taking jobs that the official authorities refuse to handle.

The series consists of five main urban fantasy novels, concluding with 'The Naming of the Beasts.' Mike Carey is also highly famous for writing the acclaimed Lucifer comic book series for DC Comics. The Felix Castor books remain highly regarded for their sharp, supernatural mysteries.

Castor primarily uses music, specifically playing a tin whistle, to manipulate ghosts and the undead rather than using traditional magic spells. This musical exorcism forces the spirits to move on from the mortal world. He relies heavily on his wits and his instrument to survive encounters with demons.