The Unwilling Umpire (A to Z Mysteries)

In the twenty-first book of the A to Z Mysteries—an early chapter book mystery series featuring strong boy and girl characters—the whole town has turned out to watch the Green Lawn women challenge the men in the charity baseball game - and to see Mr. Pocket's prized baseball collection. But sometime during the game, the balls are stolen! The police suspect the umpire of foul play. Can Dink, Josh, and Ruth Rose prove he's innocent, or is it strike three for the Green Lawn ump?
 
Each book includes a map and a letter from the author. Parents, teachers, and librarians agree that these highly collectible chapter books are perfect for emerging readers and any kid who love mysteries!