"When jammer Slashy Sadie of the Detroit Roller Derby is found dead in her loft, Detroit PD is on the case. After all, what’s supernatural about being stabbed in the chest?
But nothing is as it seems when the dead woman’s magically booby-trapped journal ends up in the hands of agent Teresa Martinez—codename Lancer. In Fulcrum’s absence, Martinez has taken over esoteric surveillance of Detroit, and the knotted mess of Freemasons, witches, and hell’s politics will push the boundaries of her fledgling magical skills."