A world full of monsters, angels, and demons.
Krystal Dermone lives a normal life, at least, as normal as you can get with five sisters. All normality ends, when she discovers a part of herself that no one else wants. Krystal is a demon. An outcast from her old home, she teams up with Rogue Glacen, an Archdemon, that shows her the way of her newly found powers. Turns out angels aren't as kind as they appear. A deadly prophecy forces the two to work together and seal the gates of heaven before the angels of the apocalypse, descend.
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.