The Entity 1984

One night, single mother Carla Moran is violently raped in her Los Angeles bungalow by an invisible assailant. A subsequent episode of poltergeist activity causes her to flee with her children to the home of her best friend Cindy Nash. They return to Carla's home and the following day, Carla is nearly killed when her car mysteriously goes out of control in traffic. Urged by Cindy to see a psychiatrist, Carla meets with Dr. Sneiderman and tentatively agrees to undergo therapy. A subsequent attack in her bathroom leaves bite marks and bruises, which Carla shows to Dr. Sneiderman, who believes they are self-inflicted despite being in places impossible for her to reach.