Change of Habit is a 1969 American crime drama musical film directed by William A. Graham, and starring Elvis Presley and Mary Tyler Moore. Written by James Lee, S.S. Schweitzer, and Eric Bercovici, based on a story by John Joseph and Richard Morris, the film is about three Catholic nuns, preparing for their final vows, who are sent to a rough inner city neighborhood dressed as lay missionaries to work at a clinic run by John Carpenter, a young doctor. Their lives become complicated by the realities they face in the inner city, and by Carpenter who falls in love with Sister Michelle Gallagher, one of the nuns.