Nude in Charcoal (1961)

NYU art student June Barton, in love with classmate Jimmy Fuller, unknowingly becomes the object of instructor Najlas Sarto's sexual obsession. Financial difficulties force June to seek work, and she accepts her teacher's offer to pose in the nude at his country home. She tells Jimmy that she must return to her family. As the work progresses, Sarto's self-control grows weaker. His mentally unbalanced housekeeper, Elia, who is also his mistress, smolders with resentment at June's intrusion, and attempts to strangle the girl.