Luke and Lydia awake in a park. They have no idea who thy are or where they came from; the only clues being their belongings. These include two strange backpacks with a note reading "Be careful, my loves. Stay together. I'll see you soon." The two as well share unique, strange powers. They curiously search for their beginnings.
But do the twings really want the whole truth? As Luke and Lydia start to untangle their past, an enemy appears from nowhere. He puts a price on the heads of the siblings and they must fight to survive. He seems familiar, like a man from long ago...
Their future balances on the help of a police officer's son; shy, quiet, and cautious Marcus. Will he betray his father, who has been trying to capture and question the twins, or the only girl who ever loved him back?
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.