William and his boyfriend, Keith, live in a lightless world. In this world, one side of the planet is forever night time, and the other is trapped in the day. There is a large barrier that divides the two sides, and only the rich can cross that border. William gets back into contact with his long distance friend Xaviar, who is moving into the city. As tensions between Keith and Xaviar begin to show, Keith changes. William is put between them. All is shoved into a glass jar, but it is cracking apart.
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.