Preller, James The Case of the Groaning Ghost (Jigsaw Jones Mystery, No. 32)

Looking for intriguing mysteries, great friendship stories, and quality chapter books for beginning readers? Look no further: Jigsaw and Mila are the best detectives on the market!Got a mystery to solve? Who you gonna call? Jigsaw Jones! But not this time. When ghosts start haunting Jigsaw's classmates close to Halloween, there's a new ghost-buster in town — Bobby Solofsky! He's stealing Jigsaw's clients right and left. Now that's spooky! Can Jigsaw prove that Bobby's ghosts are nothing to be afraid of?