These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel / Paranoia Fuel: Anywhere on Earth, at any moment, you might get taken over by some perfect stranger, who can then use your body to do anything they desire. As shown in one trailer, this can include pulling a gun on a loved one with deadly intentions.