Overview
The Chair is a 2007 Canadian horror film directed by Brett Sullivan and co-written with Michael Capellupo.
Plot
Danielle Velayo (Alanna Chisholm), a psychology student, moves into a beautiful Victorian house, but immediately begins to suffer apparent manifestations of a spirit haunting the residence. Alarmed, she calls her sister, Anna (Lauren Roy), who initially believes that Danielle is suffering a relapse of a hinted-at psychiatric disorder.
Discovering a "fog" in her hallway, Danielle follows it to the closet of the spare room, discovering a small concealed room inside the wall. Danielle investigates the history of the house: she learns of Mordechai Zymytryk (Paul Soren), who mesmerized a convicted child killer named Edgar A. Crowe as punishment for the torture and subsequent death of Zymytryk's own grandson. She also begins to exhibit signs of possession.
Influenced by the spirit, Danielle begins rebuilding a chair with straps and gears, using parts that have been scattered around the house. Attacking her sister, she straps her to the device, revealing its name and purpose: it is a panic vest, the chain and gears tightening the device around the victim's chest each time they exhale. Danielle is summoned downstairs by Jacob (Nickolas Tortolano), and Anna seizes the opportunity to escape.
From Wikipedia (CC BY-SA 4.0).