It’s one minute to midnight, and you’re wandering the front hallway of what looks to be an average American suburban home. The place is a bit of a mess, but for a house that presumably accommodates a young family nothing looks too unusual on first inspection. The lights are flickering intermittently, but that’s probably just from the storm you can hear outside.
A voice on the radio soothingly narrates the actions of a man — maybe you? — who murdered his wife and their children. You take a closer look at the piles of rubbish on the floor and see that it’s all a bit more sinister than you thought at first. The lights dim again and a baby with a way-too-raspy voice starts crying somewhere in the house. Yeah, something bad definitely happened here.
It’s a setup many of us are extremely familiar with, despite how comparatively few of us ever got to actually play it.