The Hinterkaifeck Murders-Germany’s Most Chilling Unsolved Massacre

On the evening of 31 March 1922, six inhabitants of a small Bavarian farmstead, commonly referred to today as Hinterkaifeck (German pronunciation: [ˈhɪntɐˌkaɪfɛk]), were murdered by an unknown assailant. Occurring approximately 70 kilometres (43 mi) north of Munich, the victims were Andreas Gruber (aged 63), his wife Cäzilia (aged 72), their widowed daughter Viktoria Gabriel (aged 35), Viktoria's children Cäzilia (aged 7) and Josef (aged 2) and their maid, Maria Baumgartner (aged 44). The murder weapon, a mattock, which was used on all six of the victims, was later recovered in the loft of the barn.

Immediately following the murders, the perpetrator lived with the six corpses for three days. During this time, they ate the food in the house, fed the animals on the property and used the fireplace. Four of the bodies were found stacked in the barn, the victims having likely been lured there one by one. Prior to the incident, other family members and a former maid had reported hearing strange noises coming from the attic, which led to said maid quitting the job. Considered one of the most gruesome and puzzling crimes in German history, the murders remain unsolved.
https://en.wikipedia.org/wiki/Hinterkaifec...