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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 leadsto 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! Paperback Book With Flaps; 6 X 8 1/2 inches; 176 pages.
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🇺🇸 Ship from USA · On Agora since 2026
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