The Hinterkaifeck murders occurred on the evening of 31 March 1922, when six inhabitants of a small Bavarian farmstead, located approximately north of Munich, Germany, were murdered by an unknown assailant. The six victims were Andreas Gruber (aged 63) and Cäzilia Gruber (aged 72); their widowed daughter Viktoria Gabriel (aged 35); Viktoria's children, Cäzilia (aged 7) and Josef (aged 2); and the maid, Maria Baumgartner (aged 44). They were all found struck dead. The perpetrator (or perpetrators) lived with the six corpses of their victims for three days. The murders are considered one of the most gruesome and puzzling unsolved crimes in German history. Four of the dead bodies were stacked up in the barn, the victims having been lured into there one by one. Prior to the incident, the family and their previous maid reported hearing strange sounds coming from the attic, which led that maid to quit. The case remains unsolved to this day. Location The farm at Hinterkaifeck was built around 1863. Less than a year after the murders, and the murder investigation, the farm was completely demolished revealing additional evidence including a mattock hidden in the attic and a pen-knife in the hay in the barn. Murders Prelude Strange things began to occur in and around Hinterkaifeck sometime shortly before the attack. Six months prior to the attack, the family maid had quit. It has been widely claimed that her reason for leaving was that she had heard strange sounds in the attic and believed the house to be haunted. Andreas Gruber found a strange newspaper from Munich on the property in March 1922. He could not remember buying it and initially believed that the postman had lost the newspaper. This was not the case, however, as no one in the vicinity subscribed to the paper. Just days before the murders, Gruber told neighbours he discovered tracks in the fresh snow that led from the forest to a broken door lock in the farm's machine room. Later during the night they heard footsteps in the attic, but Gruber found no one when he searched the building. Although he told several people about these alleged observations, he refused to accept help and the details went unreported to the police. According to a school friend of the seven-year-old Cäzilia Gabriel, the young girl reported that her mother Viktoria had fled the farm the night before the act after