"It's not as bleak as it sounds, because not everyone you lay in the earth comes back; there are a whole lot who are content to sleep it out. Most ghosts are tethered to the place where they died...but sometimes ghosts go walkabout, impelled by ... some unfinished business that won't let them lie quiet. ... (And) a close encounter with a ghost can be an upsetting experience. That's where exorcists come in--both the official church-sponsored ones, who are usually either idiots or fanatics, and the freelancers like me, who know what they're doing."
Only something went wrong a year and a half ago when Castor tried to help a friend, and he's been refusing all exorcist jobs ever since. Then the Bonnington Archive called needing to get rid of a ghost. Castor would have refused this job, too, except he really needs the money. So he reluctantly accepts. But things don't go as planned. And Felix soon finds himself investigating the employees of the archive hoping to discover the identiy of the ghost and how and why she died. That's when things really start to go wrong...and people start trying to kill him.
The Devil You Know by Mike Carey has all the makings of a really good urban fantasy series: a London where ghosts and other undead creatures are known to roam, a complicated main character with layers and flaws to go along with his gift for necromancy, quirky secondary characters, and great writing. I enjoyed reading this one. I like Carey's take on ghosts and how Castor uses music to connect with and exorcise them. I like that there's potential for more demons, zombies, and loup garous to show up in future books. I like that Castor's complicated past continues to complicate his life now. And I look forward to seeing where this series goes next. If you like books that combine urban fantasy with mystery, you might want to check this one out.