The Maze of Bones (39 Clues, No. 1) By Rick Riordan

The Maze of Bones is the first novel of The 39 Clues series, written by Rick Riordan and published September 9, 2008 by Scholastic. It stars Amy and Dan Cahill, two orphans who discover, upon their grandmother Grace's death, that they are part of the powerful Cahill family, whose members constantly fight each other for Clues, which are ingredients to a mysterious serum.
ASIN: B007MRF4UU
VSKU: RDV.B007MRF4UU.G
Condition: Good
Author/Artist:-Author-
Binding: Paperback