Grifter and transformation curse worker Cassel returns for the third and final book of the Curse Workers series. His mother has disappeared, his girlfriend hates him, his brother knows he was conned, the Feds and the Mob both want him to work for them, and nobody can be trusted. Black Heart is the best book in the series by a long shot. It has wonderful little digressions into the psychology behind "the con" which didn't really work in book 1 White Cat but fit into this story seamlessly. The first book was quite heavy, almost oppressive, while this one is much lighter and easier to read. It's a perfect end to a great series.