After four days in a row of indoor recess, Miss Mackle\'s students are bored-until Harry decides to solve the biggest mystery ever in Room 3BThere\'s a Locked Closet in the classroom that\'s been sealed off for years, and he wants to know what\'s inside.
Their search reveals many surprises-from a hidden trapdoor to...eyeballsWhat secret treasures does the Closet hold? Is it something more Horrible than even Harry can.
So Harry drafts Doug, Song Lee, and the rest of the class to help him investigate.
After four days in a row of indoor recess, Miss Mackle\'s students are bored-until Harry decides to solve the biggest mystery ever in Room 3BThere\'s a Locked Closet in the classroom that\'s been sealed off for years, and he wants to know what\'s inside
