The Case of the Gray Ghost's Belt Buckle — Douglas Quinn

While Quinn and his cousins Austin and Matthew visit the Manassas Battlefield Museum. While there, Quinn purchases a book about the famous Confederate Colonel John Mosby, known as The Gray Ghost. When Quinn realizes that one of the artifacts in the book is not exactly the same as the supposed original he saw in the museum, he investigates. Soon, he and his cousins find themselves dealing with dangerous men who will do anything to keep their criminal acts a secret.