The writer-director team behind 'Saw' and the filmmakers of 'Paranormal Activity' redefine the haunted house genre in 'Insidious.' This horror film is the terrifying story of a family who shortly after moving discover that dark spirits have possessed their home and that their son has inexplicably fallen into a coma. Trying to escape the haunting and save their son, they move again only to discover that it was not their house that was haunted.