Rick Riordan is the author of the Percy Jackson novels as well as its many spin-offs, and each book has a reason to be considered one of his best. The first and last books in The 39 Clues series ...

young adult fantasy novel as a 128-page visual narrative. But the team... Rick Riordan, read by Kevin R. Free and Katherine Kellgren. Brilliance Audio, unabridged, 11 CD, 13 hrs., $29.99 ISBN ...