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.

Plot

Dr. John Carpenter heads a clinic serving an underprivileged community in a major metropolis with an ethnic Puerto Rican population. He is surprised to be offered assistance by three women. Unknown to him, the three are nuns in street clothing who want to aid the community but are afraid the local residents might be reluctant to seek help if their true identities were known. The nuns are also facing opposition from the rude and arrogant priest Father Gibbons from the local parish. Dr. Carpenter and the nuns are shown dealing with non-verbal autistic girl Amanda, severely stuttering teenager Julio Hernandez and a man beaten by loan shark enforcers. The nuns at times are sexually harassed by loiterers and one nun, Sister Michelle Gallagher, suffers as an attempted rape.