Boone Daniels burns with guilt. Stalked by the wendigo that murdered his parents, his every waking minute bleeds with terror and regret. But now doused in a new fire of blame for almost killing his friend Flynn in a Ren Faire joust, Boone fills in for Flynn at his New York City big break gig.

And as soon as Boone arrives, things get weird. He catches Paganini sheet music in the air. Then a stunning girl clutching a violin case barrels into him. Her summer thunderstorm expression interrupted by the patron Professor Stone who Boone’s to meet falls three stories to the sidewalk—splat, along with a piano. Then the place explodes with gun fire and Boone helps the girl escape. She introduces herself as Sapphire Anjou, Stone’s Student Assistant, then drags Boone to meet Professor Wickhamby, where Boone uncovers a sinister plot to perform a rare Paganini piece that summons the Devil, Boone races through time to capture the cursed melody. But when steampunk vampires, a crazed Romani immortal, and Baba Yaga herself set the stage for war, he’ll have to risk death for redemption.