Alexia Tarabotti is laboring under a great many social tribulations. First, she has no soul. Second, she’s a spinster whose father is both Italian and dead. Third, she was rudely attacked by a vampire, breaking all standards of social etiquette.

Things go from bad to worse when Alexia accidentally kills the vampire and, appalling, Lord Maccon (loud, messy, gorgeous, and werewolf) is sent by Queen Victoria to investigate. With unexpected vampires appearing and expected vampires disappearing, everyone seems to believe Alexia responsible. Can she figure out what is actually happening to London’s high society? Finally, who is the real enemy, and do they have treacle tart?