Eira Graceline is being watched.
Not by potential kidnappers, or by people who want the power she wields- and she does wield power- but by Winter, a boy who each year renews the season of winter. He is fey, the Unseelie King, and he knows her. For the past seventeen years, he has been in complete power, and the cold has not released its grip on the world.
For Eira is something new that he has never seen before, not in all his eons of living. She, above all others in the world, has the ability to warm away his long cold.
And he fears her.
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.