Great Unsolved Crimes

If Lizzie Borden didn't kill her parents, who did? And where's the missing ax? What happened to the $200,000 the invisible hijacker jumped out of a 727 jet with? And what happened to the hijacker? Where would you look for the first child ever kidnapped? And why wouldn't you find him? Plus three other stories in which someone gets away with a major crime, even murder. Six perfect crimes. The police files are still open! The cases are still unsolved! Your solution is as good as anyone else's.