Librarian-spy Irene is working undercover in an alternative London when her assistant Kai goes missing. She discovers he's been kidnapped by the fae faction and the repercussions could be fatal. Irene's mission to save Kai and avert Armageddon will take her to a dark, alternate Venice where it's always Carnival. Here Irene will be forced to blackmail, fast talk, and fight. Or face death.