Insidious: Chapter 2

In 1986, Lorraine Lambert summons demonologist Elise Rainier to help her son Josh, who is being followed by the spirit of an old woman. While attempting to confront paranormal phenomena in the home, Elise's arm is inexplicably slashed by an unseen force. She insists that they must suppress Josh's astral projection abilities for his own safety, and erase his memory of these skills.