Insidious
This movie gave me nightmares as a kid , even now I get unnerved when I watch by myself. What I liked is that it introduced parts of horror I’d never experienced before and what makes it even better is that some of the unexplained scenes were further explained in the next few movies which made it better in my opinion.
The lady in black was always scarier than the lipstick demon to me , fuck that bitch GET OUT MY MIRROR HOE