The Apartment

C.C. Bud Baxter (Jack Lemmon) is a lowly Manhattan office drone with a lucrative sideline in renting out his apartment to adulterous company bosses and their mistresses. When Bud enters into a similar arrangement the firm's personnel director, J.D. Sheldrake (Fred MacMurray), his career prospects begin to look up... and up. But when he discovers that Sheldrake's mistress is Fran Kubelik (Shirley MacLaine), the girl of his dreams, he finds himself forced to choose between his career and the woman he loves. (Arrow Films)