Insidious is a 2010 supernatural horror film directed by James Wan. Josh and Renai Lambert, along with their three children, move into a new house. While Josh is exploring the attic one night he falls down and slips into a coma. This spooky tale features an orchestral score full of shrieking violins, a comatose child and Paranormal Activity-like slamming doors. And if that doesn't scare you away, then read on.