"I enjoy the Mandie series because Mandie is always involved in an exciting adventure. Once you pick up a Mandie book, you will not be able to set it down until you are through!" writes a young reader from Minnesota.Mandie's return to school after her eventful Christmas vacation finds her not knowing whether she will be able to accept President McKinley's invitation to the White House. After a long talk, Grandmother Taft agrees to accompany her to Washington where they will be joined by Joe and Sallie.The first night at the White House, Mandie hears something in the hallway and is convinced that she sees George Washington who's been dead for over one hundred years! The nights that follow she sees him again in different places.Mandie's mystery is about to turn into a gigantic surprise!