18-year old Bay Hollyn is the daughter of a wealthy sea merchant and is known around town as the girl who searches for fairies in the woods and still believes in magic. Unbeknownst to them, she has evidence that magic is real. Before her death, Bay's mother passed onto her a book said to be filled with so much magic that it hums, the only drawback is that it's completely blank. Bay has kept the book's existence a secret for years until she learns it's being hunted down by a mysterious group. Suddenly Bay's world changes as the pages fill with words but only she can see it. Bay is thrust into a war against dark forces that only she has the power to stop. Surrounded by lies, danger, and romance, Bay must navigate through the it all to save the world and survive.
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.