"Some people won't believe any of this story. You might be one of them. But every single word is true. Tony DiMarco does catch a murderer, solve a mystery, and find a treasure--all in the first few days after he moves, unexpectedly, to 13 Hangmen's Court in Boston. The fact that he also turns thirteen at the same time is not a coincidence." So begins the story of Tony and his friends--five 13-year-old boys, all of whom are living in the same house...