Amid the sumptuous backdrop of the London Season in 1905, headstrong Katherine Sinclair must join the ranks of debutantes vying for suitors. Unfortunately for Katherine, she cannot imagine anything more loathsome – or dangerous. Through her late mother’s enchanted journal, Katherine receives warning to keep hidden her otherworldly ability to perform Arcana, a magic fueled by the power of the sun. The machinations of the fashionably elite are a constant threat, but worse still are those who covet Katherine’s Arcana, seeking the power of her birthright. They could be hiding behind the façade of every suitor, even the darkly handsome Earl of Thornewood. With so much danger and suspicion, can she give her heart to the one who captivates her, or is he just another after her power?