As for American Horror Story...well, it's fucking crazy. Have you ever tried to explain the premise of this show and found yourself stopping a lot because you realized that what you're saying isn't making sense? Yeah, well, that happens to me a lot whenever I try to explain to people what goes on in the show, desperately trying to convince them to watch it. It's the type of show that is really hard to explain because it is so complex and it has so many different and amazing elements to it.
There's no need for some giant monster or someone with a chainsaw to scare you when you can have something completely simple such as a zombie. Zombies are basically us; they were once human and they are a reflection of what we have become in society. Now, we can get things without having to even try, we've almost become slaves to technology; hell, have you see the ForeverLazy's that have come out?! It is terrifying to pit a zombie and a human together because in the long run, there isn't much that separates the two.
I think that if someone showed up on my doorstep wearing a latex suit, I would lose my mind. It's probably more terrifying to me than any other monster or serial killer that can be thrown my way.