“The Naming of the Beasts” is book 5 in the Felix Castor series by Mike Carey. Juliet, the succubus, has gone all wild, beaten up her human wife and is on the verge of feasting on aroused men’s souls again. Felix’s friend Rafi, still possessed by the demon Asmodeus, has gone AWOL and started a killing spree. Life’s never easy when you’re a freelance exorcist… 🙂
This is the last in the series so far and it maintains the pace of the other books, while tying up a lot of loose ends. According to Wikipedia the next book is out late 2001 (imminently). It will be interesting to see what Felix does next, since the main thrust of the story of the first 5 books is now concluded.