The Entity (1982)

Director: Sidney J. Furie
Cast: Barbara Hershey, David Labiosa, George Coe, Jacqueline Brookes, Margaret Blye, Michael Alldredge, Richard Brestoff, Ron Silver

Synopsis:

Carla Moran, a hard-working single mother, is raped in her bedroom by someone or something that she cannot see. Despite skeptical psychiatrists, she is repeatedly attacked by this invisible force. Could this be a case of hysteria or something more horrific?