We have no idea what's behind of any of these Doors, she said. It could be dangerous for us... and we could be dangerous for it. The city of Shattershard lies in ruins following a war engineered by three teenagers from Earth. The devastation has left Laura blind, Alex injured, and Zoe without a way home. Forced to leave Shattershard, they're now caught between worlds and face thousands of Doors — with no way of knowing what lies beyond them. And in unknown worlds there are unknown rules. Rules that, when broken, carry a price... 'Lassiter... is a young writer to look out for' The Times.

What happens here is real and dangerous. You have stumbled into a darkness you don't understand. They thought they could handle it. They thought they understood the rules. They were wrong. Now four of Earth's teenagers are trapped in new and unfamiliar worlds — paying for their part in destroying the city of Shattershard... and almost destroying each other. Each thinks they know their friends from their enemies, but who can they really trust? And will they ever find their way home? Shadowland is the third part of a fast-paced fantasy which shows what it might really be like to travel into another world.