This is one of the ebooks I've had in my library for quite some time and have finally read. I wish I had done so sooner--it was really good! The main character is an immortal demon and is very old, but he's equivalent to a mortal teenager. He's a funny, skeptical character. The Underworld (Hell) in this series is not the complete opposite of Heaven. It's interesting that two of the Underworld's council members are ex-angels because they exchanged places with two demons who went up to Heaven's council, I suppose to ensure there are differing points of view on both sides. Instead of expressions like 'God damn it', characters use 'Lucifer bless it', which I thought gave the conversations a unique flavour. And that halberd on the cover is just awesome. Looking forward to the rest of the series.