In Germany, 1922, the murders of six people at the Hinterkaifeck farmstead shocked the nation. This wasn’t just because of the gruesome nature of the case, but also because the case was so incredibly weird, and it remains unsolved to this day. Over 100 people were interviewed in the murder, but no one was ever arrested. No motive was ever established as to explain the murders. The previous maid had left 6 months earlier, saying the home was haunted.