112 pages
English language
Published June 15, 2000 by Albert Whitman.
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While staying at the Crooked House, the family home of their housekeeper Mrs. McGregor, the Aldens try to solve a riddle that will lead them to a hidden treasure.
Subjects
- Buried treasure -- Fiction.
- Brothers and sisters -- Fiction.
- Orphans -- Fiction.
- Mystery and detective stories.