Irene is a professional spy for the mysterious Library, which harvests fiction from different realities. And along with her enigmatic assistant Kai, she's posted to an alternative London. Their mission - to retrieve a dangerous book. But when they arrive, it's already been stolen. London's underground factions seem prepared to fight to the very death to find her book. Adding to the jeopardy, this world is chaos-infested - the laws of nature bent...

Librarian spy Irene and her apprentice Kai return for another “tremendously fun, rip-roaring adventure,” (A Fantastical Librarian)—the third in the bibliophilic fantasy series from the author of The Masked City.
 
Never judge a book by its cover...
 
Due to her involvement in an unfortunate set of mishaps between the dragons and the Fae, Librarian spy Irene is stuck...