Librarian spy Irene thought her to-do list would be her undoing. She's on missions for both the Library and a dear friend - the detective Vale. And she’s also training her new Fae apprentice, who's more interested in the stacks than sleuthing. But now someone is trying to kidnap her and kill her friends. As Irene, Kai and Vale try to track down the would-be assassin, they uncover a plot. It’s even more insidious than usual and could threaten Irene’s headquarters, Vale’s home and the Library itself. 

In a 1920s-esque America, Prohibition is in force, fedoras, flapper dresses and tommy guns are in fashion and intrigue is afoot. Intrepid librarians Irene and Kai find themselves caught in the middle of a dragon vs dragon contest. It seems a young librarian has become tangled in this conflict, and if they can't extricate him, there could be serious political repercussions for the mysterious library. And, as the balance of power across mighty factions hangs in the balance, this could even trigger war. 

When it's your job to save the day - where do you start? Librarian spy Irene has standards to maintain, especially while on probation. And absconding from a mission via a besieged building doesn't look good. But when her escape route home goes up in flames, what's a spy to do? However, it seems gates back to the Library are malfunctioning across dozens of worlds. Worse still, her nemesis Alberich is responsible - and he plans to annihilate the Library itself. 

As Irene tries to manage a fraught Fae-dragon truce and her overbearing parents, she’s given a hot new mission. The world where she grew up is in danger and only one book can save it. This is held by Mr Nemo, secretive Fae villain and antique dealer, so Irene and Kai travel to his Caribbean retreat to strike a deal. But in return for the book, they must steal a painting from 21st century Vienna. They’ll join a team of dragons, Fae gamblers and thieves, so their greatest challenge may be one another. 

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. Not just for Kai, but for whole worlds. Kai's dragon heritage means he has powerful allies, but also powerful enemies in the form of the fae. With this act of aggression, the fae are determined to trigger a war between their people - and the forces of order and chaos themselves.