The Whistle, the Grave, and the Ghost (Lewis Barnavelt #10)

About “The Whistle, the Grave, and the Ghost (Lewis Barnavelt #10)”

Lewis Barnavelt, on a camping trip with his Scout troop, stumbles upon an old grave and a mysterious magical whistle. When he discovers the whistle has power to stop boys who bully him, he faces a tough decision about whether to keep using it, since he suspects it might not be fully benign. The whistle draws him, best friend Rose Rita Pottinger, uncle Jonathan, and Mrs. Zimmermann into a battle with an ancient evil.