In a dangerous hidden world of supernatural warriors, she may be the key to winning everything.

Olivia Markham lives a complicated life. By day, she's a star CIA officer working a cover as a graduate student in Vienna. By night, she's a self-appointed, kick-ass superhero wearing a harlequin's hood and wielding a wicked bō. The sexual predator that Olivia tracks one July evening to Vienna's Stadtpark calls himself Asmodeus, a demon's name. What Olivia doesn't know is that Asmodeus has followers he calls bogomili after an ancient sect of believers. She suddenly finds herself fighting to save her own life against these vicious creatures. Across the Stadtpark another hears Olivia's battle with the bogomili. He is a drangùe, a powerful warrior with supernatural abilities who's duty bound to save innocents from Asmodeus. This drangùe will stop at nothing to defeat his age-old enemy—even if it means risking everything to bring Olivia into his world. The only problem is that the closer he keeps her, the more the drangùe wants to keep Olivia in his life. And that is not part of his long-term battle plans.