Return to the Invisible Library for Irene's most perilous mission yet! The Untold Story is the climactic eighth book in Genevieve Cogman's exhilarating series.

For librarian-spy Irene, this could be her last mission. She has been sent on a terrifying, dangerous task – one which must be kept secret at all costs. To eliminate Alberich.

But even more troubling news emerges. Entire worlds are disappearing, and the Library itself may have something to do with it.

To uncover the truth of these vanishing worlds, Irene and her friends must descend into the unplumbed depths of the Library. What they find will change everything . . .

The Untold Story is the unputdownable eighth book in the Invisible Library series of fantasy novels by Genevieve Cogman.

Genevieve is also the author of Scarlet, a Sunday Times bestselling novel. Set during the French revolution, it is a spellbinding tale of magic, vampires and chaos, written with her trademark wit and pace.

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