Have you ever heard of animal ghosts? Gus McDougal, the owner of a large bus line, has problems with ghosts, and Bill and his rangers are directly involved. The ghosts almost put Gus out of business, and Bill is hard put to solve the problem of ghosts appearing along the forest edges at night. What would you do if a man told you that you had to stop his men from seeing ghosts? Let's find out what Bill and the men do in today's story!