What Happened To the Naked Mole Rat?

The first book in a funny supernatural graphic novel series for early readers about an eight-year-old boy who solves mysteries with the ghost of his former class pet. Mr. Pebbles is dead, and everyone thinks it's Carter's fault! When Carter's third-grade class accuses him of killing the class pet, a naked mole rat named Mr. Pebbles who shivers a lot and smells a little funny, can Carter clear his name . . . with the help of Mr. Pebbles's ghost?