Don't mess with me...

Laura likes to be in control. But she's a long way from Earth now, facing dangers she can only begin to imagine.

What is the Great Library - and what are the rules that control it? Who made the doors that lead from world to world? And which way leads home?

But Laura's not the only one trying to make her weay in a whole new world. After what happened in Shattershard no one's really sure which side they're on - or who their friends are...