As one of Chicago's vampire hunters, Ivy Bailey is responsible for keeping the city's human residents safe -- a job that becomes infinitely harder when someone starts committing gruesome acts of magical murder. But what Ivy doesn't realize is that she is a hunter being hunted. Vampire enforcer Christopher Bell is in Chicago to investigate rumors of a revolution, but when he comes across Ivy being followed through dark streets, he finds a ghost from his past. More than a century ago, Christopher fought the vicious London serial killer Jack the Ripper, and won. But now the Ripper's tainted soul is back and on the prowl once more. Ivy insists she doesn't need protection, especially from a vampire enforcer. But soon Christopher finds himself in the middle of a fight between demons and mortals, watching over the frustrating woman who has managed to stir his undead heart.