Insidious: The Last Key

In 1953, teenager Elise Rainier, lives with her parents Audrey, and Gerald, a prison executioner, and her brother Christian, in New Mexico. Elise claims to see the ghosts of the prisoners that have been executed, alarming her parents. One night, when Christian and Elise are going to bed, Elise encounters a ghost in their room. Frightened, Christian looks for the whistle their mother gave them to call for help, but it's lost. Their parents come to see what the commotion is, and Gerald, furious, beats Elise and locks her in the basement. A voice lures Elise to a door which she unlocks. A demon called Key Face comes through the door possessing Elise. Audrey investigates, finding Elise, but the entity kills Audrey by hanging her. Elise comes out of the possession as Gerald arrives, finding Elise and Audrey's body. Read more on Wikipedia.