10 Most Underrated Psychological Horror Movies

10. Thesis

2001's intense Nicole Kidman vehicle The Others is a masterpiece of psychological horror, a stripped down and potent piece of suspense cinema which relies on brilliant performances for its subtle scares.

It's also not remotely underrated, which is why this list is instead highlighting the director's previous film that netted him the job making The Others.

Director Alejandro Amenbar’s deeply creepy 1996 debut Tesis (or Thesis) is a Spanish language thriller which starts off slow and subtle, but soon turns into a full blown horror as the filmmaker displays his promise in this genre.

A dark satire of the Spanish film industry, the movie follows a student as she delves into researching what initially appears to be a genuine snuff film. Fascinated by the sort of troubled mind that would create such a sickening thing, she's soon drawn into a dark underworld in this intense and gritty psychological horror.

Surprisingly reserved in its use of onscreen violence, Tesis uses the same approach as Joel Schumacher's underrated 8MM by showing little but leaving the audience disturbed by the twisted premise of viewers who get off on watching real life violence and murder.