Mercy Sparx Omnibus, 1

Finally, the past seven years of Mercy Sparx comics are all in one easy-to-read package. Four hundred pages! Heaven's secret bounty hunter is actually a Devil working on their side. Disguised as a human living on Earth, she hunts down rogue angels, doing Heaven's dirty work. Collects the original miniseries, issues #1-9 of the ongoing series, and the Hack/Slash crossover A Slice of Hell.