Nate the Great Goes Down in the Dumps — Marjorie Weinman Sharmat

Nate the Great and his trusty dog, Sludge, have a tricky case to solve. Nate's friend Rosamond has started a future-telling business, but her money box is missing. Sludge and Nate visit Claude, who helped Rosamond set up her business, and Finley, who collects boxes for his rat. They can't seem to help.

It looks like the only way to clean up this case is to get down and dirty in the dumps!