I have been a devout follower of Tommy Monaghan, Nat the Hat, Tiegal et al since issue one of this brilliant series which has only recently ended. This is without a doubt one of the finest storylines of the run which is saying a hell of a lot for such an excellent series. This has it all.
From the very first issue we are introduced to some past friends and foes. The Mawzir has returned with vengence on his demonic mind and in order to defeat him, Tommy must enlist the help of some pretty unlikely allies, Etrigan, Six-pack and Catwoman in one of the best guest appearences I've seen.
If you've never seen Hitman but have liked Ennis' other titles, specifically Preacher you will love this title and I strongly recommend it.