"Isn't it precious, how one small act of defiance can change the course of so many lives?" Bryanna Nicholls, Otherworld's youngest sorceress in a century, has spent five years hungering for revenge against the Brotherhood of Sìorraidh, since their brutal murder of her cousin. When she discovers her aunt, the renowned mage, Obelia Nicholls, may know how to defeat them, Bryanna joins her at her healer sanctuary for the summer, determined to uncover how to vanquish them once and for all. But there are those who don't want Bryanna to access the information she needs - like Weylin Conveil, her aunt's surly, infuriatingly attractive boarder. Weylin seems convinced that she's nothing more than a privileged socialite playing at revenge, and Bryanna is more than willing to prove him wrong. As Bryanna unearths the key to ending the Brotherhood's reign, she finds herself forced to make an impossible choice: abandon her quest or risk the wrath of the Brotherhood of Sìorraidh and, in so doing, endanger the lives of everyone she holds dear.

A spellbinding clean romantic fantasy adventure brimming with magic, resilient heroines, and a simmering enemies-to-lovers romance, all set against a rich backdrop of British and Celtic mythology.