16 Psychological Thriller Movies That Will Have You Questioning Everything

That popcorn-spilling jump at a scary scene in a horror movie is one thing, but psychological thrillers get inside your head and stay there, for a totally different kind of scare that can linger long after the closing credits roll. For those who like to mull over movies (and aren't too susceptible to nightmares) a slow-burn kind of fright is far more satisfying.

Alfred Hitchcock, one of the most accomplished psychological thriller filmmakers of all time, described the genre perfectly: "There is a distinct difference between 'suspense' and 'surprise,' and yet many pictures continually confuse the two." Hitchcock's talent, of course, was his ability to keep viewers on the edge of their seats, waiting for the next twist to finish turning. That said, he certainly isn't the only one who has mastered the art of suspense over time — directors Jordan Peele, Martin Scorsese and David Fincher, just to name a few, have also created equally stirring films full of unexpected plot lines and characters who aren't quite who they seem.

Whether you're an avid psychological thriller fan looking for your next excite or trying to decide on a mind-bending flick to watch leading up to Halloween, we've gathered a list of the best hair-raising films the genre has to offer. Chances are, you'll feel inclined to double check your door locks after watching these. And even if you're not easily scared, you might want to sleep with the lights on, just in case.