Goodreads helps you keep track of books you want to read.
Start by marking “The Mortal Word (The Invisible Library #5)” as Want to Read:
The Mortal Word (The Invisible Library #5)
Enlarge cover
Rate this book
Clear rating
Open Preview

The Mortal Word

(The Invisible Library #5)

4.30  ·  Rating details ·  842 ratings  ·  147 reviews
A corrupt countess
A spy in danger
And an assassin at large

The fifth title in Genevieve Cogman's witty and wonderful Invisible Library series, The Mortal Word is a rollicking literary adventure.

Peace talks are always tricky, especially when a key diplomat gets stabbed. This rudely interrupts a top-secret summit between the warring dragons and Fae. As a neutral party, Librari
Paperback, 418 pages
Published November 29th 2018 by Pan MacMillan (first published November 27th 2018)
More Details... edit details

Friend Reviews

To see what your friends thought of this book, please sign up.
This book is not yet featured on Listopia. Add this book to your favorite list »

Community Reviews

Showing 1-30
Rating details
Sort: Default
Jessica ☕
Any time a new book in this series is announced, there should be an international holiday of celebration and reading. What a treat.

Fans of Investigator Vale will be happy to know that he is back and center-stage. When an assassination takes place at a fae-dragon peace conference, he is the natural choice to find the killer. However, there are political considerations involved, and he is given a team of one librarian, one fae, and one dragon work together. Irene is, of course, the assigned librar
Thanks to Netgalley and the publisher for offering me an advanced copy in exchange for nothing more than an honest review.

If you haven't picked up The Invisible Library, stop reading RIGHT NOW and go pick it up. It's a clever world of time-travel-adjacent adventures with dragons and fae and even a magic language of sorts. It's like Doctor Who meets The Chronicles of St. Mary's, and it's a BLAST to read. So go pick it up. This one is book five, so reading any more now will just spoil all your fun
Austine (NovelKnight)
I NEED this book. Love this series so freaking much it hurts, y'all. It. Hurts.

(Please go read the first 4 books so you can feel my pain and join me in the wait for book #5!)
Maria Dimitrova
I really wanted to like this one more. I liked it well enough but to be honest it was rather bland. it was so bland that a week later I still have no real opinion on it. I remember the main points but everything else is a blur which makes it a mediocre book in my opinion at best. Still I liked the path the series is taking and hopefully I will still care enough to pick up the next book when it's published.
Magdalena aka A Bookaholic Swede
THE MORTAL WORD is the fifth book in The Invisible Library series. I've read every single book in the series and I could not wait to read this book. Irene's job is to steal rare books from different worlds for the Invisible Library. She loves her job, the adventures, the books. After a job in Germany, Irene learns about a secret Dragon-Foe peace conference that the Library is overseeing. But when a high- ranking Dragon is murdered, the peace talks come to a halt. Irene and her friend, private d ...more
Apr 09, 2018 is currently reading it  ·  review of another edition
Oh, Happy Daaaaaaay.....

My favourite character, Peregrine Vale (alias fantasy Sherlock Holmes) IS be back!


Carole (Carole's Random Life in Books)
This review can also be found at Carole's Random Life in Books.

This was another great installment in the Invisible Library series. I have really enjoyed all of the previous books in this series so I was really excited to read this new installment. This is the fifth book in the series and I do think that this is a series that is best read in order. I had a great time jumping back into this complex set of worlds and thought that the story was very well done.

In Paris of a neutral world, peace talks
Robin (Bridge Four)
Why am I so Meh about this series?


There are a lot of things that I like about this series.
-Irene, Vale and Kia are all pretty likable characters who have a decent number of flaws to make them interesting

- The various worlds with different levels of order and chaos we travel to are also interesting.

- I idea of the library and it’s ambiguous involvement in each book’s crisis. I still have no idea if it is a mostly good or bad place.

- Each individual book plot. They are all different and episodic
Liz Barnsley
Nov 27, 2018 rated it really liked it  ·  review of another edition
The Invisible Library series is one of the most imaginative series in existence at the moment  – especially for those of us who are absolute book addicts-  it’s a heady mix of Literary adventures, magic, multiple worlds and books that hold the universe together. There’s dragon’s too. Just saying. Oh and Fae, must not forget them. Well unless they want you to of course…

Irene is a librarian, a spy, a kind of thief if you like and quite often saves the world(s)…

Over the course of the novels Genevie
Robin Bonne
Sep 30, 2018 rated it it was amazing  ·  review of another edition
Shelves: netgalley
Another adventure with Irene, Kai, and Vale? Yes, please!! I was extremely excited to receive this ARC ebook from the publisher. I hate waiting for Invisible Library novels from the library because the queue is always long, and for good reason— they are full of action and adventure.

Our favorite series characters are assembled to investigate the murder of a dragon advisor during peace negotiations between the dragons and fae. If you haven’t tried this series yet, you are missing out. I can’t wai
Melindam has just sent me an email that Book 5 will be available in November + there is a cover and blurb.

And my favourite character Peregrine Vale will be back!


Anne - Books of My Heart
This review was originally posted on Books of My Heart

Review copy was received from NetGalley. This does not affect my opinion of the book or the content of my review.

I've been reading and enjoying   The Invisible Library series  since the beginning.  The world-building is almost a fresh start in each book since Irene travels.  She has been assigned a home world where she lives and has some regular friends and frenemies. There are a few Library characters who are around throughout the series.
Jan 09, 2018 marked it as to-read  ·  review of another edition
I don't even need to know what this is about to be overly excited to read it. The last book has left me feeling so many emotions and I will be overjoyed to jump back into this series when this book comes out.
I was so excited when I got approved for the ARC of this book, especially because I was rejected same time last year for The Lost Plot and it felt like an affirmation that I’m now a capable blogger 😉😉😉 And I’m so glad to have read this book because it has all the wonderful elements that I have loved in the series with an extra dose of politics that I really enjoyed.

Irene is such a strong female character that I’m surprised she is not talked about more in the book community. She fights with the t
Nov 30, 2018 rated it it was amazing  ·  review of another edition
Originally published at Reading Reality

In this version of the multiverse the Library serves to provide the balance between the fae worlds of chaos and the dragon worlds of order. Humans don’t do well at either extreme, and it’s the Library’s function to guard and preserve the middle ground where human beings thrive.

Just because the Library serves as a point of balance does not mean that the lives of any of the Librarians that serve it are remotely balanced in any way. It could be said that the L
☕ Kimberly
Nov 28, 2018 rated it really liked it  ·  review of another edition
While each book contains a clever, suspenseful mystery this series is best read in the order of its release. Complex story arcs, relationships and incredible world building are built upon in each title.

A couple of things you need to know. Worlds ruled by or where Dragons dwell tend to be filled with order. As one would expect worlds where the Fae live or dwell tend to be filled with chaos. The Librarians collect books that are dangerous or need protection to keep the balance between order and ch
Pamela Wiggins
Nov 27, 2018 rated it it was amazing  ·  review of another edition
This series is so fun! The author manages to keep it fresh and exciting, with an ever expanding world(s). I’m not at all biased because the main character is a librarian. Really, I’m not.
Oct 10, 2018 rated it it was amazing  ·  review of another edition
I received a free netgalley from the publisher. I am in no way obligated to provide a review. My review is completely unbiased.
I was very pleased to have received an advanced copy and happy to report Cogman has delivered another awesome fun fantasy with Irene and company. This time Vale is called upon to use his super sleuthing skills to assist Irene in solving a murder that has occurred at Peace Talks taking place between the Dragons and the Fae.
My favorite thing about the book is Irene. She
Oct 21, 2018 rated it it was amazing  ·  review of another edition
Shelves: fantasy
This is an incredibly enjoyable read that's full of twists, political intrigue, magic, and the complex world and character-building that Cogman has perfected. It's a mystery wrapped up in a historical outfit with dashes of magic and action. It's a mix that's hard to ignore.
The signing of a peace treaty between the ever-warring factions of Chaos (Fae) and Order (Dragons) is in the hands of a neutral party (the Library), but the murder of a dragon endangers things and Irene, Vale, Kai, Silver, an
Nov 27, 2018 rated it it was amazing
This series is super great y'all should read it
I love the Invisible Library series so much. Such a unique universe! I enjoyed how The Mortal Word was more of a "traditional" detective novel than previous books, but have a serious bone to pick about the fade to black between Irene and a certain handsome someone.

Check out my full review at Forever Young Adult.
All Things Urban Fantasy
Review courtesy of All Things Urban Fantasy.

THE MORTAL WORD, the fifth installment in the Invisible Library series, is as delightful as the rest of the series. Mixing fantasy with historical locales with a murder mystery continues to be a successful combination of elements to showcase Cogman's character development and wit.

As I've mentioned before, Irene is one of my favorite fantasy characters, for a number of reasons. However, I've come to realize that a lot of how I feel is based on how other
Dec 09, 2018 rated it liked it  ·  review of another edition
I love books, and recent books about books have been my fiction bread and butter... I have been faithful to this series and will continue to be, I had to reduce my rating because, in all honesty, I don't think that THIS installment was ready, that is, it was published prematurely. The pacing felt wrong, Irene is depending less on other people, which is great, but more and more she is the damsel in distress product of her own rash actions. The First and the Second books were something special, an ...more
Steph De Mel
Dec 08, 2018 rated it liked it  ·  review of another edition
Shelves: fantasy
While I love this book series, it does feel as though Cogman is beginning to run out of steam; while "The Invisible Library" was bursting with fresh ideas (almost to the point of being overwhelming), the plot of this latest installment is rather formulaic and lacks the energy and creativity that made the first few novels so entertaining. On the other hand, the Blood Countess is a great villain (and deserved a larger role in this novel, in my opinion), and I enjoyed the murder-mystery sub-plot (a ...more
Nov 19, 2018 rated it it was amazing  ·  review of another edition
HOT DAMN. I do not know how I did it or who is at fault, but I received my copy of the fifth instalment of the Invisible Library Series yesterday, almost two weeks before the actual publication. Thanks, postman, I love you!

And what a ride it was. Y'all are in for some highly entertaining, exciting and nerve-wracking story involving our favourite characters. I won't spoiler anything here, but does Irene has time to sleep or eat or relax EVER? I don't think so as she is too busy so safe the day (
I've said this once and I'll say it again: this series just keeps getting better.

The Mortal Word is one of my anticipated releases for the year so when my copy reached me yesterday, I couldn't help but jump straight into it ... even though it's been a very long time since I've read the previous books. But unlike with other books/series, I found it was surprisingly easy to reacquaint myself with the characters and the world as a whole.

And boy was it fun to find ourselves mixed up in a murder my
The next in this series. I am enjoying this series because - the hero is a Librarian!! And as a Librarian myself I am all in favor of readers understanding the power of a Librarian. :) This story is a bit more dangerous to our trusty crew (librarian, detective, and dragon) as well as to Lord Silver, a Fae adversary from other stories. Irene is fearless, quick on her feet, and able to hold her own with Dragon and Fae.

Another thing I really like about this series is how the situation of the chara
Nov 06, 2018 rated it really liked it  ·  review of another edition
Shelves: arc
Another exciting installment in "The Invisible Library" series. Librarians are mediating peace talks between Dragons and Fae. When a delegate is murdered, junior librarian Irene Winters as well as master detective Peregine Vale are summoned to solve the case in an alternate Paris during the Belle Epoque. Several characters from earlier books appear, including dragon/former library apprentice Kai Strongrock (who just happened to be in the area, really, nothing to see here), and new characters are ...more
*Source* Publisher
*Genre* Science Fiction, Time Travel
*Rating* 4.0


The Mortal Word, by author Genevieve Cogman, is the Fifth installment in the authors The Invisible Library series. The series follows Junior Librarian Irene Winters who works for the mysterious Invisible Library. Her objective, most of the time, is to acquire one of the books that is necessary to keep the balance between order and chaos. For the past several books, Irene has been stationed in an alternative Victorian Eng
Nov 29, 2018 rated it it was amazing  ·  review of another edition
Once again, Genevieve Cogman has drawn me into her fantasy alternate worlds peopled by mortals, Fae, and dragons. There are librarians and books, and a real-life woman infamously known as a vampire because she bathed in virgins’ blood, a Parisian underground, and much more. She has proven again that librarians make the best heroes!

Read the rest of the review at
« previous 1 3 4 5 6 7 8 9 next »
Genevieve Cogman got started on Tolkien and Sherlock Holmes at an early age, and has never looked back. But on a perhaps more prosaic note, she has an MSC in Statistics with Medical Applications and has wielded this in an assortment of jobs: clinical coder, data analyst and classifications specialist. Although The Invisible Library is her debut novel, she has also previously worked as a freelance ...more

Other books in the series

The Invisible Library (5 books)
  • The Invisible Library (The Invisible Library, #1)
  • The Masked City (The Invisible Library, #2)
  • The Burning Page (The Invisible Library, #3)
  • The Lost Plot (The Invisible Library, #4)