There are 8 books in the The Invisible Library series. The newest book is The Untold Story which came out in 2021.

1
The Invisible Library

Book cover of The Invisible Library
Collecting books can be a dangerous prospect in this fun, time-traveling, fantasy adventure—the first in the Invisible Library series!
 
One thing any Librarian will tell you: the truth is much stranger than fiction...
 
Irene is a professional spy for the mysterious Library, a shadowy organization that collects important works of…
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2
The Masked City

Book cover of The Masked City
Librarian-spy Irene and her apprentice Kai are back in the second in this “dazzling”* book-filled fantasy series from the author of The Invisible Library.
 
The written word is mightier than the sword—most of the time...
 
Working in an alternate version of Victorian London, Librarian-spy Irene has settled into a routine,…

3
The Burning Page

Book cover of The Burning Page

An action-packed literary adventure! The Burning Page is the third title in Genevieve Cogman's clever and exciting The Invisible Library series.

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…

4
The Lost Plot

Book cover of The Lost Plot
After being commissioned to find a rare book, Librarian Irene and her assistant, Kai, head to Prohibition-era New York and are thrust into the middle of a political fight with dragons, mobsters, and Fae in this novel in the Invisible Library series.

In a 1920s-esque New York, Prohibition is in…

5
The Mortal Word

Book cover of The Mortal Word
In the latest novel in Genevieve Cogman's historical fantasy series, the fate of worlds lies in the balance. When a dragon is murdered at a peace conference, time-travelling Librarian spy Irene must solve the case to keep the balance between order, chaos...and the Library.

When Irene returns to London after…

6
The Secret Chapter

Book cover of The Secret Chapter

In this bookish fantasy adventure, a Librarian spy must fall in with a villainous group to achieve her goals. Imagine Ocean's Eleven meets James Bond with a pinch of magic. The Secret Chapter is the sixth novel in Genevieve Cogman's Invisible Library series.

Irene and Kai have to team up…

7
The Dark Archive

Book cover of The Dark Archive
A professional spy for a mysterious Library which harvests fiction from different realities, Irene faces a series of assassination attempts that threaten to destroy her and everything she has worked for.

Irene is teaching her new assistant the fundamentals of a Librarian's job, and finding that training a young Fae…

8
The Untold Story

Book cover of The Untold Story
“Clever, creepy, elaborate world building and snarky, sexy-smart characters!”—N. K. Jemisin, author of The Fifth Season

In this thrilling historical fantasy, time-traveling Librarian spy Irene will need to delve deep into a tangled web of loyalty and power to keep her friends safe.

Irene is trying to learn the truth…