Ashley and Mary-Kate are having a terrific time on a family vacation in Washington, D.C. They especially like spending time at the Smithsonian Air and Space Museum. But during their visit, the famous Wright Brothers' plane starts to tremble -- and spooky voices float down from the cockpit! Could there be a ghost in the machine? Mary-Kate and Ashley are on the case!

The Case of the Flying Phantom 2000, HarperEntertainment, New York, NY

ISBN-13: 9780061065910

Trade paperback