A secret library hidden out of time that collects books and knowledge form many different versions of our world. Any book about libraries catches my interest. Irene is a junior librarian collecting books from different worlds sometimes under dangerous conditions. She gets assigned a new trainee, Kai and an odd mission to retrieve a book of fairytales from a chaos infected world. Soon they are both in over their heads and teaming up with a detective reminiscent of Sherlock Holms. There are others looking for the book and they are racing to be the first ones who find it.  

I enjoyed this book!