Visible crew/equipment: When Josh goes to 'The Further' to look for Dalton and goes up to the attic where the red door is, the room is filled with an eerie smoke, but as the camera pans out a little, you can see the smoke machine in the bottom left hand corner billowing it out. (01:18:50)
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Insidious (2010)
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Directed by: James Wan
Starring: Patrick Wilson, Rose Byrne, Lin Shaye, Ty Simpkins
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Elise Reiner: It's not the house that is haunted. It's your son.
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Question: When Josh is in the further looking for Dalton, what is the deal with the family that looks like mannequins and has the creepy smiles? Why does the one girl shoot the family? Is there any back story on it?
Answer: They are just people trapped in the further after their terrible death. It would be nice to later find out the back story on them in a future film.
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Answer: It's implied that the girl went crazy and killed her family, but it's not really elaborated on. They're just some of the many spirits to be trapped in and haunt the Further, likely due to the violent nature of their deaths.