document: Movie review : A classic haunted-house tale in '' `` Insidious '' '' If horror movies are about the unexpected , then '' `` Insidious '' '' delivers the last thing you would expect : Restrained chills from the guys who launched the '' `` Saw '' '' franchise . Director James Wan and writer Leigh Whannell , who gave us the original '' `` Saw '' '' -LRB- which is better than you remember -RRB- , reteam for this update on the classic haunted-house thriller - which uses its creaking noises and fast shocks to good effect . Josh -LRB- Patrick Wilson -RRB- and Renai -LRB- Rose Byrne -RRB- move into a new house with their three kids . But domestic bliss is shortlived , when oldest son Dalton -LRB- Ty Simpkins -RRB- falls into a coma , which has no medical explanation . Renai comes to believe that what 's happening is supernatural - and even convinces Josh to move the family to a new house . Moving does n't help , as the dark forces follow the family . '' `` It 's not the house that 's haunted - it 's your son , '' '' gravely explains Elise , a no-nonsense psychic played by screen veteran Lin Shaye , who steals the movie . Wan ratchets up the old-school shocks , starting with the occasional door slam and building to a chaotic finale that bridges the real world and a deathly realm cryptically called '' `` The Further . '' '' Whannell 's script is leavened by the comic relief of two nerdy paranormal investigators , played by Whannell and Angus Sampson . '' `` Insidious '' '' is the rare example of a PG-13 movie that delivers genuine chills , without excessive blood and gore . The images are fleeting , but tough to shake .
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