Wolf Island

The book starts with Grubbs fighting a demon alongside Beranabus and Kernel in the Demonata universe. After subduing and torturing the demon they are fighting, they question it about the Shadow, but learn nothing. Later, they meet up with Shark, Meera, Bec and Dervish. They discover that the Lambs were responsible for the attack on the Grady's home in Carcery Vale and it is decided that Grubbs should go after them to find out more.