It Follows

The film follows Jay Height (Maika Monroe), a 19-year-old student living in the suburbs of Detroit. After a sexual encounter, she becomes stalked by a nameless entity. The film then becomes an exercise in existential dread: no matter how far Jay runs, she must face the mounting dread of its slow but relentless approach, and the fact that she will never be totally safe, even if she passes it on.

Example of:
Slasher Movie