8. John Doe's Apartment - Se7en
Knock knock. Who's there? A petrifying Sunday School lesson. Why risk this at all? When the door opens, Mr. Doe is going to find your flaw, hold you at gunpoint, and exploit you for his own sadistic pleasure (if he gets pleasure from it at all). Or maybe he won't do anything like that at all. Maybe he'll smile and give you a box you hope is full of candy. Spoiler alert: it's not. And Kevin Spacey might throw up on you. And laugh. Happy Halloween.