The maze of bones /
Rick Riordan.
- 1st ed.
- New York : Scholastic, 2008.
- 220 p. : ill. ; 20 cm.
- 39 clues ; bk. 1 .
May include game cards in cover page.
Amy and Dan, members of the powerful Cahill family, try to uncover the thirty-nine clues which will reveal the secrets of their lineage and find out what really happened to their parents.