Move over, Headless Horseman! A new ghost on a horse comes into town in this spook-and-Snook-tacular Hallowe'en extravaganza. A ghost of a jockey is killing former jockeys who placed in a horse race. Olive could be the next victim because she won and asks Ned and Emerson for help. Meanwhile, Ned has to deal with his own Ghosts of Hallowe'en Past.