English language
Published April 2, 2011 by Scholastic, Incorporated.

Rick Riordan: Maze of Bones (the 39 Clues, Book 1) (2011, Scholastic, Incorporated)
English language
Published April 2, 2011 by Scholastic, Incorporated.
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.