Goosebumps -17 WIZARD

While visiting HorrorLand's gift shop, Marco and his friend Gabriella find a rare edition of a comic book called THE WIZARD OF OOZE. Hidden in the back of this book are secret instructions on how to gain super powers. Marco is so excited that he starts talking about this special book at a comic convention. Big mistake. A couple of shady characters are after the comic, and will do anything to get their hands on it...