Treasure Hunter Join Jackpot Potter and his team as they set out to recover the stolen locked case that holds a priceless journal filled with centuries of secrets. Readers follow clues and escape traps as they hunt for the four ancient symbols that will open the lock. Includes math mysteries, science experiments, and puzzles. Also includes a journal, decoder wheel, a secret safe, lenses and frame for telescope, and much more. Pkg. Consumable.