A Mystery about Sound: It's a dark and stormy morning at Camp Dakota, but that won't keep Braelin from investigating the whispers coming from the lake. What else could it be, but ghosts? The campers try to record and amplify the sounds, but suddenly the eerie voices go mute. Braelin and Megan won't give up, even when their ghost hunt leads them deep into the woods. Can they use their sound smarts to get back safe? Look in the back of the book for experiments and more to help you become a science detective too!
