Marly and two classmates she barely knows--Isla and Sai--must work together to unravel the clues leading to the treasure left for them in Mr. Summerling's will.
Mr. Summerling, Marly's neighbor, talked about being a treasure hunter, and news of his death has brought Marly into a treasure hunt of her own. In his will, Mr. Summerling left a treasure for Marly and two classmates, Isla and Sai. They barely know each other, but they have to work together with a series of riddles, puzzles, and clues to find the treasure.
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