Us (2019), directed by Jordan Peele and produced by Blumhouse, is about a family who must fight to survive against their clones who want to kill them.
Jack Frost (1997) is directed by Michael Cooney and is about a prisoner who turns into a snowman and goes on a massive killing spree.
Alien (1979) is directed by Ridley Scott and is about a crew who must survive an alien which has been released on their ship. The fight for survival begins.
Edward Theodore Gein had only confessed to the killing of two women but what was done to the bodies after the fact was inhumane and unconscionable. Take a look here.
Blood Countess (2020) is written by Lana Popovic and tells the tale of Elizabeth Bathory and her uncanny, torturous and inhumane ways. Check out the review.