Howl of the Fettered Wolf. The Invisible Entente, #4

For vengeance demigoddess Vera Goodall, balance is everything. Her life revolves around her contracts, her bookshop, and her dogs, and there is no room for anything - or anyone - else. Every aspect of her life is scheduled, and delegation is a four-letter word. But when someone attempts to steal The Book of the Fettered Wolf, an ancient text with the power to destroy the otherworld, Vera will need to break all her own rules to keep that balance from toppling.
With the help of Gabriel Mulligan, the Gorgon-Fae who threatens the walls she's built  around herself, Vera sets out to protect the book from those who wish to use it. Along the way, she unveils the lies that have created the foundation of her life, and each new revelation blurs the line between friend and enemy. In the midst of chaos and intrigue, balance becomes a matter of survival. Vera must decide who to trust and how much to open her heart if she wants to protect the otherworld and everything she holds dear.