A review by nerfherder86
Diabolical by Cynthia Leitich Smith
Excellent end to the series, as Miranda (dead vampire watching from The Penultimate, sort of halfway to Heaven), werewolf Kieren, (Miranda's boyfriend), vampire with a soul Quincie, and Quincie's fallen guardian angel Zachary (and Miranda's boyfriend) all join in the fight to save Miranda's best friend Lucy from being taken by the devil. Set in a boarding school that is a front for the devil, the guys enroll undercover as students to find out what's going on, and end up trapped there, fighting hellhounds and a ghostly teacher. Will they succeed in saving Lucy and restoring Zachary's angel status? Or will the fiends of evil succeed?