The Mortal Word by Genevieve Cogman

The Mortal Word (The Invisible Library, #5)

by Genevieve Cogman

The Mortal Word is part of Genevieve Cogman’s witty and wonderful Invisible Library series, which can be enjoyed as part of a sequence or as standalones.

'Captivating story with animated characters . . . cracking pace' - Guardian


A corrupt countess. A spy in danger. And an assassin at large.

Peace talks are always tricky . . . especially when a key diplomat gets stabbed. This murder rudely interrupts a top-secret summit between the warring dragons and Fae, so Librarian-spy Irene is summoned to investigate. In a version of 1890s Paris, Irene and her detective friend Vale must track down the killer – before either the peace negotiations or the city go up in flames.

Accusations fly thick and fast. Irene soon finds herself in the seedy depths of the Parisian underworld on the trail of a notoriously warlike Fae, the Blood Countess. However, the evidence against the Countess is circumstantial. Could the assassin – or assassins – be closer than anyone suspects?

The Mortal Word is perfect for fans of Doctor Who and Sherlock Holmes. Continue the bookish magic with The Secret Chapter. Genevieve is also the author of the Sunday Times bestselling Scarlet - which reimagines the tale of the Scarlet Pimpernel, but with vampires, mages and magic. . .

Reviewed by bumblingbookworm on

4 of 5 stars

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This review was originally posted on The Bumbling Bookworm

This is book 5 in the series, so I'm just going to jump right into this - I adored the plot in this instalment.  With peace talks hampered by a murder, Irene has to step in to save the day and boy does she ever! I loved that this one had the feel of a traditional detective novel, with twists and turns everywhere you look.  I can sometimes be quite good at ruining books for myself by guessing the twist, but for this one I was kept guessing the whole way and it was fantastic.

My biggest criticism for this book is that it's just too long - it's the longest of all the books in the series and it really didn't need to be.  I feel that 50-100 pages could've been cut from this and it would've been a lot better.  But the mystery and political intrigue helped to make up for this, and I was super happy that Irene and Kai finally got together, even if it was mostly left up to the reader's imagination.  A solid addition to the series, I always look forward to the next one.

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Reading updates

  • Started reading
  • 18 January, 2020: Finished reading
  • 18 January, 2020: Reviewed