The Invisible Library by Genevieve Cogman

The Invisible Library (The Invisible Library, #1)

by Genevieve Cogman

One spy. One dangerous book. One deadly mission. Discover the first book in this gripping fantasy mystery series – The Invisible Library is the astounding debut from bestselling author Genevieve Cogman.

Perfect for fans of Mr Penumbra's 24-Hour Bookstore by Robin Sloan, Jasper Fforde's The Eyre Affair or Ben Aaronovitch's Rivers of London.

'I absolutely loved this' – N.K. Jemisin, author of The Fifth Season


Irene is a professional spy for the mysterious Library, whose staff are sent to different realities to harvest dangerous and mystical fiction.

Irene has been posted to an alternative steampunk London along with her enigmatic new assistant, Kai. Their mission: to retrieve a dangerous edition of Grimms' Fairy Tales. But it has already been stolen.

In London's underground, the laws of nature have been bent – supernatural creatures and unpredictable magic stalk the land. The city is home to vampires, werewolves – factions that are all prepared to fight to the death for this book.

Irene must face a web of deadly danger, deception and secret societies. Her new assistant is hiding secrets of his own. Yet failure is not an option – the nature of reality itself is at stake . . .

Continue the journey with the adventurous second title in the Invisible Library series, The Masked City.

Praise for the series:


'I absolutely loved this' – N. K. Jemisin, author of The Fifth Season

'Irene is a great heroine: fiery, resourceful and no one's fool' – The Guardian

'Cogman keeps upping the ante on this delightful series!' – Charles Stross, author of the Merchant Princes series

Reviewed by Silvara on

4 of 5 stars

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I loved the idea of a spy network made out of librarians. And the book grabs your attention from the first pages, because Irene is in the middle of a mission to steal a book from a boys school when the book opens.

There are elements of Sherlock Holmes, as well as the 007 movies in the book. Not because the book is using either as a reference exactly, but because there is a great detective in Vale. And lots of narrow escapes, assistants who are more than what they seem, double-crosses and mysteries. Besides all that, there's also the fantasy and steampunk elements. There's even a scene with crocodiles!

I loved Irene. The way she saw the world, and how her thinking changed over the course of the book. I also liked getting to know the bits of history of the Library and how things worked. But I think my favorite character was Kai. He was mysterious, but also very principled. With very strong feelings about what was right and wrong, even if they didn't always match up to what Irene thought. And I LOVED the reveal about him!

There are vampires and Fae in the book, as well as normal humans and the Librarians themselves. There are also airships, chaos magic, mentions of cyborgs and people with clockwork parts. A great deal of the story takes place in an alternate world that has the feel of Victorian times to it. But at the same time, some of the technology is more advanced.

I loved the way the magic in the book worked. Everything from the Fae magics, to that which the Librarians could wield. There was also quite a bit of world building. Both for the alternate that Irene and Kai find themselves hunting through, as well as for the Library itself. I can hardly wait to start reading the next book!

This review was originally posted on Fantasy of the Silver Dragon

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Reading updates

  • Started reading
  • 26 July, 2016: Finished reading
  • 26 July, 2016: Reviewed