The Great Paper Caper by Oliver Jeffers

There was once a forest where everyone went about their business. All was well until the strangest thing started happening: Without warning, branches began disappearing from trees. Something will have to be done, everyone agrees, and a full-scale investigation is launched. Witnesses are interviewed. Clues are gathered. Paw prints are dusted. Who is the culprit? And why are there paper airplanes littering the forest floor?Hmm...