Enforcer wolf. That's Riley. A gangster took him in when he was young, and he's been loyal ever since. 
It's getting harder and harder for big, soft-hearted Riley to unquestioningly follow orders...but he doesn't want to be alone without a pack. Almost anything is better than that. 
What would it take for a guy like Riley to switch sides and work for the cops instead? Maybe not very much at all.
A shifters and partners novel
68,000 words
Low heat