A Nightmare On Elm Street (1984)

Springwood County, Ohio. A deformed dream stalker has been tormenting high school student Nancy Thompson and the teenagers on Elm Street. But everyone knows nightmares are not real. The deep slashes on their bodies, however, say otherwise. And as innocents die left and right, ripped to pieces, the oneiric intruder's charred figure haunts Nancy, who must remain awake to stay alive. Now, bright-red blood and a long-forgotten, hair-raising connection to the small town blur the line between the victims' dreams and the ghastly murderer's realm. After all, the vengeful shadowy killer has all the time in the world to inflict pain. And sooner or later, the kids will fall asleep.

IMDb: https://www.imdb.com/title/tt0087800