The Entity (1982)

As if struggling to make ends meet and trying to get her life back on track wasn't enough, Carla Moran, a hard-working single mother of three, finds herself with the back to the wall when faced with an inexplicable supernatural incident. Now, Carla is having a hard time telling the difference between fact and fantasy, unable to find logical explanations. For instance, how on earth has the unseen assailant managed to break into her secured, locked-up home? Nevertheless, the painful bruises in hard-to-reach parts of Carla's body don't lie. And--as all attempts with psychotherapy failed, and the late-night paranormal attacks become increasingly violent--desperate Carla has no other choice but to turn to a team of parapsychologists who offer, at least, hope for a resolution. However, is there an escape from abstract evil? Above all, can Carla beat the Entity?