"Mr. Summerling has left Marly, Sai, and Isla a set of brand-new clues to follow, including tickets to the mysterious Summer Island, where they hope to finally discover what lies at the end of the treasure hunt"--WorldCat.
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Details
ISBN: 9780593094884
ISBN: 0593094883
ISBN: 9780593094891
ISBN: 0593094891
ISBN: 9781713764281
ISBN: 1713764288
Physical Description:print125 pages : illustrations ; 21 cm.
Publisher:New York : Penguin Workshop, [2021]
Copyright:℗♭2021
General Note: Sequel to: The hidden room.Accelerated Reader AR LG 3.9 2.0 511785.