Buzz·Posted on Mar 7, 20147 Unsolved Murder Mysteries To Keep You Up At NightMaybe don't read these before bed.by Katie HeaneyBuzzFeed StaffLinkFacebookPinterestTwitterMail 1. Hinterkaifeck 2. Villisca Axe Murders 3. The Axeman of New Orleans 4. The Moonlight Murders 5. Mad Butcher of Kingsbury Run 6. Jack the Ripper 7. The Zodiac Killer