In this gripping finale to Christelle Dabos's bestselling Mirror Visitor quartet, Ophelia and Thorn finally uncover the truth that might help them solve the chaos in their universe of the arks.

After their initial distrust of each other, Ophelia and Thorn are now passionately in love. But they must continue to keep their love hidden. And listen out for the mysterious echoes...Only then can they attempt to decipher a cryptic code and discover the truth behind the sinister figure of the Other, whose devastating power continues to bring down entire arks, plunging thousands of innocents into the void.

At the observatory of the Deviations, overseen by a sect of mystical scientists who conduct terrifying secret experiments, Ophelia and Thorn hope to halt the ongoing destruction and bring the world back into balance.

Christelle Dabos takes us to the heart of a momentous otherworldly game, in which the fate of her characters hangs in the balance. The Storm of Echoes is a marvellous conclusion to a series that has captivated readers everywhere.