Hell's Heroes (The Demonata Book 10) by Darren Shan

Beranabus and Dervish are gone. Bec has formed an unholy alliance with Lord Loss. Kernel is blind, held on Earth against his will. Grubbs is mad with grief and spinning out of control. The demons are crossing. The disciples are falling. The shadow is waiting. Welcome to the end.

Very good book by a very good author.
Anonymous Reviewer *****