Here are a bunch of pages on our website that are tagged aliens horror
Aliens infuse this subgenre with relentless troublemaking. Overlapping with 'science fiction,' the source of terror is another planet, whose inhabitants are encountered there, or travel to our Earth, if not both. The "Alien" franchise (featuring Sigourney Weaver) leads this charge. Scott Sigler's novel Infected is a recent example, among many. In M. Night Shyamalan's movie Signs, mysterious rural visitors are revealed to be (somewhat improbable) aliens.