The Last Twenty Minutes of 1999's Audition
Audition should be on everyone's list of Greatest Horror Film. So I urge you to give it a watch. Maybe watch the last twenty minutes with your hands in front of your eyes.

Eight year old Peter is plagued by a mysterious, constant tapping from inside his bedroom wall—one that his parents insist is all in his imagination. As Peter's fear intensifies, he believes that his parents could be hiding a terrible, dangerous secret and questions their trustworthiness.
Audition should be on everyone's list of Greatest Horror Film. So I urge you to give it a watch. Maybe watch the last twenty minutes with your hands in front of your eyes.