Watch this if you dare!

Have you ever watched a movie trailer that's so chillingly creepy, it gave you nightmares?

You haven't? Well, this will be a first.

A few of the scenes from Goodnight Mommy were so unbearable to watch that some moviegoers overseas walked out of the cinema.

This horror film, set to be released next month, tells the story of two nine-year-old twins whose mother returns home from facial reconstructive surgery.

The boys don't believe that the woman covered in bandages are their mother and that's when things get super creepy.

Watch the promo below, if you think you're brave enough!