In many ways, psychological horror can be more disturbing than a traditional slasher or gorefest. A film that primarily deals with paranoia and suspense is sure to be unsettling, even when there are no serial killers or monsters on-screen. Such movies may still have plenty of grim imagery, but it's the atmosphere and tension that leaves a lasting impression.
And if the story is told by an unreliable narrator, it's all the more eerie since it's impossible to tell where the truth ends and the lies start. Even if everything ends with the heroes living to see another day, it's challenging to root for them when it's obvious the traumatising events they experienced have taken a heavy toll on them. When it comes to perfect features in this subgenre, Se7en, The Shining, and Rosemary's Baby are at the top of the pile.
However, there are a bunch of other twisted thrillers that have still yet to really get their due. Although some underrated psychological horrors went on to become cult classics, others continue to go unnoticed. Considering how engrossing and petrifying the films on this list are, it's baffling how they didn't generate more buzz when they were released.
10. Under The Shadow Even though Under the Shadow centres around a Tehrani woman and her child being tormented by a Djinn spirit, it's so much more than a mere ghost story. Despite being Babak Invari's first full-length feature, the Iranian filmmaker effortlessly tackles multiple genres, powerful political subtexts, and t.