The Hinterkaifeck murders occurred on the evening of March 31, 1922. The six victims were: Andreas Gruber and Cäzilia Gruber; their widowed daughter Viktoria Gabriel; Viktoria's children, Cäzilia and Josef; and the maid, Maria Baumgartner. Their attacker lived with the bodies of their victims for 3 days. They ate the families food, cared for the livestock, then vanished. The murders are considered one of the most gruesome and puzzling unsolved crimes in German history.

And for funsies we threw in a overview of a few haunted houses. 

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