True crime: unsolved crimes

This book is about a few murdurs, and one of wich are the Zodiac. He has been discribed looking slightly different by different people who say they've seen him. The sick b******* even threatened to kill children. The next killer talked about is responsable for the death of a man on trial for shooting a man in the throat, leaving him just barely alive. The trial was delayed multiple times, and the townspeople got sick and tired of waiting for a man to be put in prison for a few years. The man was eventually cornered and killed before the trial could take place.