Book excerpt: "This book is about the most interesting key ever made, which now hangs in the central passageway of George Washington's Mount Vernon mansion, helping to greet over a million visitors a year. The main key to the Bastille prison in Paris, it was given in 1790 to Washington, the patriarch of liberty, by his missionary, the Marquis de Lafayette, who took the "sacred fire of liberty" he discovered in America and tried to fan its flames in France. Become a history detective and find out how this unique key was made, how the man who made it helped kill a king, and how it made its way to Mount Vernon. Along the way, learn about the interesting and unexpected twists and turns made in unlocking the doors hiding the truth about the key, which some (incorrectly) argue is a counterfeit. Then learn what Washington and Lafayette each believed was the "key" to establishing and maintaining liberty, and what went right and wrong in their respective revolutions. Finally, learn how the key continues to inspire a world-wide devotion to freedom."--