He Ate Their Ice Cream Used Their Computer Then Vanished Forever

On December 30th, 2000, a family of four in Tokyo went to bed like it was any other night. By morning, all four of them were dead and the person responsible hadn't left. He stayed in that house for hours. Ate their food. Got on their computer. Even folded his own clothes and left them behind before walking out the front door. He left behind more physical evidence than almost any crime scene in Japanese history DNA, fingerprints, clothing, even a hip bag full of trace evidence from three different countries. Police compared over 5 million fingerprints and tested more than a million DNA samples. They still don't know who he is. This is one of the strangest, most heavily investigated murder cases that's never been solved and 25 years later, it's still active. New true crime cases every week.