EXIT: - Das Buch: Der Keller der Geheimnisse [The Book: The Cellar of Secrets]

Friday afternoon and school's out. But not for Luca, Ben, and Mina. They have to stay behind, strangely in room U1 in the basement of the Leonardo da Vinci High School. No teachers in sight, just a note telling them to solve the task on the blackboard. Mina doesn't want to be in this dusty hole with the flickering light on the ceiling. She wants to leave – but the door is locked! Now, an extraordinary puzzling journey begins for the three friends. Who is behind all this? Finding that out is the reader's task. They must solve the puzzles to find out on which page the story continues. Clues can be hidden anywhere, creative solutions are required, cutting, drawing, folding – everything is allowed. And time is running out...