In March 1922, a quiet Bavarian farmhouse called Hinterkaifeck became the site of one of Germany’s most chilling unsolved crimes. Six family members, including two young children, were brutally murdered with a mattock, and the killer may have lived in the house for days afterward. Strange footprints in the snow, voices in the attic, and eerie signs of someone watching the family all led to a case that has terrified investigators and armchair sleuths for over a century.In this episode of The Treehouse in the Woods, we explore the mystery of the Hinterkaifeck murders: the unsettling clues left behind, the bizarre theories ranging from serial killers to supernatural forces, and why this haunting true crime story continues to fascinate.