Magic requires sacrifice.

Sell your soul for a spell and become an outcast. Who doesn't love a chance to reinvent themselves? But where to begin? Donovan's new beginning involves fur hunting and trading in the wealthy merchant-run city of Nightingale. But like most soulburned, his heart longs for something he cannot remember. The opportunity to fill that longing comes in a way most unexpected-and unwelcome. A bloodthirsty kingdom has invaded the farms and forests near the city, and Donovan signs up to fight with his rivals: the Nightingale Guard.

When the attacks are revealed as not only raids, but a full scale invasion, Donovan is sent on a suicide mission to seek help from one of the most unlikely of places: the unpredictable, savage fey. If he does not succeed, Donovan will lose the city and the woman he loves-and prove once and for all that there is no future for those who sacrificed their souls for magic.