THE THIRD BOOK IN A GRIPPING NEW FANTASY ADVENTURE SERIES FROM NEW YORK TIMES BESTSELLING AUTHOR A. J. HARTLEY.

For Darwen Arkwright, being able to travel through mirrors makes him special. But what if his gift won’t last for ever?

When the world beyond the mirror is threatened, Darwen Arkwright, together with friends Rik and Alex, must go in search of allies to join the fight to defeat Greyling and his growing army of monsters. But in a world of mirrors things may not always be as they first appear, and when the battle lines are drawn, how will Darwen know who are his friends and who are his enemies?

The problem with doors is that they open both ways. There are monsters inside, and some of them are trying to get out . . .

“Magical, inventive and hugely entertaining. This is a wonderfully written, delightful story, full of diverse characters, from a hugely talented author. Highly welcome and recommended” - Bali Rai