Step inside. Don't look back. Forward is the only way. His Dark Materials meets Mad Max in this unforgettable blockbuster adventure about the world between worlds.

When a fierce quake strikes the remote island of Bluehaven, and her father disappears, Jane Doe is thrown headfirst into an epic quest to bring him home.

But this ain't no ordinary rescue mission. Her father is lost in a place between worlds; a dangerous labyrinth of shifting rooms, infernal booby traps and secret gateways. And Jane has to find him fast, because someone else is searching for him, too. A man who knows her father's secrets. A man who has an army.

Along with a sidekick named Violet and the enigmatic Hickory, Jane is about to discover that this adventure is even bigger on the inside than it looks ...

This is the blockbuster adventure the worlds have been waiting for.

Winner of the 2019 ABIA Book of the Year for Older Children
Longlisted for the 2019 Indie Book Awards: Best Children's Book