The undead of Rome are racing to unravel an ancient mystery – and only one woman can stop them...

As Rome prepares for its Carnivale, the new leader of the city's vampire hunters – Lady Victoria Gardella Grantworth de Lacy – must prove herself as never before. For, to gain access to the secrets of a legendary alchemist, Rome's vampires have allied themselves with creatures as evil and bloodthirsty as they are.

Reluctantly, Victoria must turn to the enigmatic Sebastian Vioget for help, just as Maximilian Pesaro arrives to assist his fellow slayers – no matter what the sacrifice. Desire puts her at the mercy of Sebastian, while loyalty binds her to Max, but can she trust either man? Especially when a seductive vampire begins luring her into the shadows...