The Case Of The Crooked Carnival (Doyle and Fossey, Science Detectives Bk. 5)

They're in business together. Serious business. There isn't a case that can't be solved by Drake Doyle and Nell Fossey, the sharpest science detectives in the fifth grade. Are you the victim of a crooked carnival game? Call Doyle and Fossey. Are howling ghosts and ghouls keeping you up all night? You know the drill. Stop wasting time and pick up that phone. After you solve the four mysterious cases in this book, try out the fun activities for yourself. Find your notebook, grab your periscope, and you're ready to go!