Nightmares Come at Night (1970)

In Zagreb, the stripper Anna de Istria works in a sleazy cabaret. She is seduced by the blonde Cynthia Robins who invites her to move to her house. Ana is disturbed by nightmares, where she kills a man with a spear, and Cynthia calls Dr. Paul Lucas to treat Ana. Meanwhile, a couple that lives in the house next door spies the movement in Cynthia's house.