On its journey to Professor Hinkley's research facility, Nancy Drew must protect an amazing creation that could possibly end the world's energy crisis. Unstable and dangerous, the super fuel-efficient engine must be transported by a private train. But dark forces are at work, attempting to shanghai the miracle machine - literally at every turn by using computers to jam the switches! But while Nancy, and her friend George, attempt to determine which sinister suspect is behind these despicable acts, they soon realize that if their adversaries can't succeed at stealing this miraculous machine, they'll destroy the train, along with everything, and everyone on it! "The Disoriented Express" is the second in a series of three Nancy Drew adventures entitled "The High Miles Mystery."