Wolf Island: Darren Shan

Grubbs Grady treads new ground in this, the eighth dramatic title in the Demonata. But beware - Trespassers will be eaten!
"We spot the werewolves as we skim the treetops. Mutated, vicious, hairy monstrosities, all fangs, claws and muscles. The beast within me tries to force its way to the surface, howling silently at its warped brethren. I've never rid myself of the wolf…"
As the mysterious Shadow builds an army of demons, Grubbs and his team search desperately for answers. But when they follow up a new lead, it takes them to an old, unexpected foe - the Lambs.
The curse of the Gradys has returned with a vengeance. Werewolves are on the loose. And they're hungry…