With the wars between the Iano city-states escalating, Chinook must find a way to keep her pack safe, from both the wars and an age old threat to the Valka species.
Chinook is a Valka, specifically, the Alpha of the Blueriver pack and one of the oldest Valka still alive. She was disfigured horribly when she was younger, and one of her optics is now Acid green, the colour of insanity. In any mechanical or bio-mechanical being, there is no naturally occurring green optics, the only time green optics occur is when one is exposed to a volatile substance called Acid.
One drop will slowly drive a person mad. The more Acid one is exposed to the faster one loses their sanity. Only Chinook has ever "survived" contact with Acid. Many outside of her pack are almost deathly afraid of her when she shows her true nature. Most of the time she keeps her scars and optic hidden with her Simage generator; a device which all Valka have that creates solid light holograms.
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.