The seeing stone / Tony DiTerlizzi and Holly Black.
When Mallory and Jared attempt to rescue Simon from goblins, they use a magical stone which enables them to see things that are normally invisible.
|Main Author:||DiTerlizzi, Tony.|
|Other Authors:||Black, Holly.|
New York :
Simon & Schuster Books for Young Readers,
Spiderwick chronicles ;
DiTerlizzi, Tony. Spiderwick chronicles ; 2.