Sometimes cracking a difficult case means you have to get a little bit dirty. Nate the Great is called into action when his eccentric friend Rosamond discovers a major problem with her brand new future-telling business. Her very important money box has completely vanished, and she needs the neighborhood's best detective to track it down. Nate and his reliable dog, Sludge, start questioning everyone who might know something. They talk to Claude, who helped set up the tricky business, and they even interrogate Finley, who collects strange boxes for his pet rat. Unfortunately, nobody seems to have the answers they need. To find the missing cash and solve the mystery, Nate realizes that he and Sludge will have to search the messiest place in town. Young readers will love holding their noses and diving into the clues as Nate proves that a great detective will go anywhere to help a friend in need.