As a fox-shifter, Shayne Davies gets no respect in an underworld run by the fearsome and powerful - werewolves and vampires, sorcerers, demons, and mythical faerie creatures. Even at home, Shayne is still treated like the brat of the pack. All Shayne wants is to prove that she's got what it takes to run with the big dogs, which is why she is constantly hounding Nick Gorgeous to make her an agent at the "Double D", the Detroit Division of the FUA.

Most humans have no idea that a dark and deadly underworld, filled with magic and monsters, exists. They wander through life blissfully ignorant of the supernatural world around them. Nora Jacobs is different. Nora knows exactly what kinds of hellish creatures haunt the streets of Detroit. Thanks to a unique set of psychic abilities, Nora has managed to steer clear of the underworld most of her life. But all that changes the night the most powerful vampire in the city discovers her gifts and decides to use her as a tool to find one of his missing clan members.

Callypso Lillis is a siren with a very big problem, one that stretches up her arm and far into her past. For the last seven years she’s been collecting a bracelet of black beads up her wrist, magical IOUs for favors she’s received. Only death or repayment will fulfill the obligations. Only then will the beads disappear. Everyone knows that if you need a favor, you go to the Bargainer. He’s a man who can get you anything you want … at a price. And everyone knows that sooner or later he always collects. But for one client, he’s never asked for repayment. Not until now. 

I’m Lucy, a regular accountant turned alpha werewolf. A tryst with the wrong incubus ripped me from my ordinary life and sent me tumbling into a magical realm that I'd never even dreamed existed. I was just adjusting to pack life when I was asked to mercy-kill the current alpha. I'm not a total bitch so I did what he asked, but it's left me as alpha of a pack I don't know, full of werewolves who resent that I still live and breathe while their old alpha doesn't. If I’m to survive in this dog-eat-dog realm, I’m going to have to win my new pack over–and fast.

People say I'm a weirdo. Sure, my idea of a party is a mini box of wine and hanging out with a feral raccoon, but it works for me. When I’m accused of murder, things get crazy. One, I learn that I have magic. Two, there’s a secret magical city hidden right in London itself. And three, my only hope is a vampire who’s sexy as sin and scary as the devil himself. He's called the Devil of Darkvale, and he all but owns Guild City. Some say I should just quit and turn myself in. Not a chance. I’m going to solve this murder myself.