Agatha is one of the many children living on the streets. One of the many left behind in the city of ashes and smoke. Lost in a world of Insanes, where nowhere is safe, and no one can be trusted. She's alone, wandering the dark world, trying to find a safe place to sleep and the bare minimum amount of food to survive. She is Sane, lost in a world darkened by grief and anger and evil. Corrupt by the tiniest bit of black in everyone's soul. Until she finds William. And then, she starts to think that maybe, there's hope after all.
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.