1982, a young woman walked up a flight of stairs to her friend’s apartment, and knocked on the door. As she did, she noticed the little window on the door was broken. Worried something was wrong with her friend, the woman knocked again, this time a little louder, while also peering through the broken window to see if she could see anything. There was nothing really to see, but she could hear music playing inside. So after another minute went by and still her friend had not come to the door, the woman tried the door handle and found it was open. With her heart racing, the woman opened her friend’s door and stepped inside. A few seconds later