One cold October evening was enough to change two very different lives.
There is Alyn Winters, the young prince of Dienvia on the planet Cresus, who is celebrating his tenth birthday like any other royalty would, until he is assassinated. Well- almost.
Then there is Saro, a skilled assassin. The only thing setting him apart from being like every other mindless killer is that he is fair. Maybe a little too fair.
Between the two, a simple promise is made, that just doesn't sit right with the rest of the country. Will it still be fulfilled, or will it be broken right before their eyes?
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.