Deathwish by Rob Thurman is the fourth book to the Cal and Niko Leandros series following Nightlife, Moonshine, and Madhouse. Half-human Cal and Niko Leandros, the main characters in the series, continue their agency of mythical beings with new problems in New York City. The brothers are yet again faced with the threat of their monster heritage, the Auphe (elf family), who are blood thirsty for revenge. Worse still, is the mystery surrounding their newest client, a vampire named Seamus who was killed before the brothers could find out the identity of Seamus' stalker.
Corvan was finally turning 16, the age of becoming a man in his little village town. All he wanted as a birthday present was to be able to stand up to the bullies at school and have his families financial problems disappear, but Corvan got a whole lot more than that. Beginning with the finding of a single hammer with strange blue writing on it, mysteries begin to unfold after his parents hint around about the real meaning of his name and the secrets of the hammer. Corvan is confused and scared and turns to his one and only friend Kate.