It's Gabriel's second year at Crookhaven School for Thieves. And with a tricky Break-In challenge to the teacher's section of the library to attempt, plus a new class called Reclamation, his Miscreant year is already off to a busy start. Then Gabriel and his friends learn about Maravel's Maze. Hidden deep beneath the lake, forgotten about by the school, it's a labyrinth of obstacles. Each tests a crook-related skill - and all are nearly impossible. But the impossible has never stopped Gabriel's crew before, especially not when there's something at the heart of the maze that they all desperately want...