A strange tunnel. Ten riddles. Can you solve the case and return a fortune? It's a beautiful summer day, and Leo, Mara, and Mara's dog Snowflake are headed back to acrobatics camp near old Volkenstein Manor. But on their way, the group stumbles upon a freshly dug tunnel that leads...to a bank vault? The kids find themselves in a mystery that keeps getting stranger. Soon they are investigating the theft of the Volkenstein family treasure and pursuing a gang of robbers. But they won't succeed without your help A mystery story and interactive reading experience to accompany the award-winning EXIT: The Game series. Please note--this book can only be solved once. Get ready to fold, cut, and write on the pages to solve the riddles
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