When he goes to live with his cousin at the family's ancestral home, a ten-year-old boy finds a secret room and clues that could help unravel the riddle of the family treasure.
- ISBN10 0689501005
- ISBN13 9780689501005
- Publish Date 1 January 1978
- Publish Status Out of Print
- Out of Print 16 March 2017
- Publish Country US
- Imprint Atheneum Books
- Format Hardcover
- Language English