The original revolved around a couple terrorized by a group of mysterious hooded assailants over the course of one terrifying night.
- This marks David Alcalde's feature film directorial debut, after working on commercials from Spain and Mexico for several years.
- The original was directed by David Moreau and Xavier Palud, who both went on to helm The Eye remake a couple years later.
- Studiocanal also co-produced the original.
- A review for the original can be read here.
- The original was supposedly based on a "true story."
- A remake of the 2006 French film with the same name.