10 Psychological Horror Movies You Must See Before You Die

Something of an underappreciated gem from last decade, this experimental take on the genre plays with the very real fear that anyone can go a little mad sometimes.

Claire Foye plays Sawyer, a woman who has recently moved to a new city due to a stalker. Upon arriving she finds her mental health deteriorating so seeks the help of a therapist. Unbeknownst to Sawyer, she inadvertently signs herself over for clinical observation for twenty-four hours, with any outbursts or failure to comply resulting in further incarceration.

Director Stephen Soderberg made the bold decision to shoot the film entirely on an iPhone 7 Plus, the result of which is decidedly eerie, giving us that authentic fly on the wall experience. This unconventional shooting style is arguably the film's biggest strength as well its most glaring fault as some of the visuals can come across like a low-quality VHS release.

However, if you can get past some of the more wonky-looking shots, you'll find this to be a beautifully crafted treat. It's the kind of low-key affair that forgoes violence and bloodshed in favour of bum-clenching tension and intense bouts of paranoia that will keep your palms sweaty until the very end.