After a freak accident with escaped tigers, newly orphaned Violetta Tancetta is left in a city which teems with werewolves, vampires, and zombies. Unaware of the danger, all she knows is that her twin brother is throwing away his future when he decides to drop out of the elite all boy school he’s been attending, and she isn’t going to let him do it, even if it means taking his place.When eighteen-year-old, Violetta Tancetta goes undercover as her brother, she has no idea that Calder, School for Boys isn’t only for rich, prissy boys, but also the premier training ground for the next generation of Butchers, or those trained to slaughter vampires, werewolves, and anything else that goes bump in the night.Her plans get complicated when she gains the friendship and respect of the greatest Butcher of them all, wickedly handsome Orion who constantly threatens the security of her male identity.