Jeff Hirsch
Books by Jeff Hirsch
Series by Jeff Hirsch
The 39 Clues
39 clues to unscramble. One fabulous prize to win. It’s a riddle, a book and a game to play. Are YOU up to the challenge? Written by celebrated author Rick Riordan, with a real $10,000 prize to win, this interactive challenge takes books to a place they’ve never been before.