The Setagaya Family Murders is one of Japan’s most chilling unsolved crimes, leaving four dead with and tons of clues, but no suspects. On New Year’s Eve, a grandmother discovered her daughter and family murdered, sparking one of the largest investigations in Japan’s history. The murderer spent time in their home and despite leaving behind numerous pieces of physical evidence, this case remains unsolved. With no suspect and few leads, this unsolved crime remains one of Japan's most chilling and bizarre mysteries. Today, we investigate the “faceless” culprit behind the Setagaya Family Murders. (This case has also been referred to as the Goldilocks Murders or the Goldilocks Killer.) Sensitive topics: murder and child death