John Shirley 
Grimm: The Icy Touch 

A BRAND NEW NOVEL BASED ON THE HIT NBC SERIES. There once was a man who lived a life so strange, it had to be true. Only he could see what no one else can: the darkness inside, the real monster within. And he’s the one who must stop them. This is his calling. This is his duty. This is the life of a Grimm. When a torched body is found in an underground tunnel, Portland police captain Sean Renard takes one look at the victim’s burned claws and assigns the case to homicide detectives Nick Burkhardt and Hank Griffin. They soon discover that a criminal organization known as The Icy Touch is threatening Wesen into joining their illegal drug-smuggling operation, and brutally murdering those who refuse. But as Nick closes in on the gang’s charismatic and ruthless leader, the Grimm uncovers an ancient— and deadly—rivalry…