"After leaving a wealthy Belgian family to become a nun, Sister Luke struggles with her devotion to her vows during crisis, disappointment, and World War II."
Audrey Hepburn
as Sister Luke
Peter Finch
as Dr. Fortunati
Edith Evans
as Rev. Mother Emmanuel
Peggy Ashcroft
as Mother Mathilde
Dean Jagger
as Dr. Hubert Van Der Mal
Mildred Dunnock
as Sister Margharita
Beatrice Straight
as Mother Christophe
Patricia Collinge
as Sister William
Rosalie Crutchley
as Sister Eleanor
Ruth White
as Mother Marcella
Barbara O'Neil
as Mother Didyma
Margaret Phillips
as Sister Pauline
Patricia Bosworth
as Simone
Colleen Dewhurst
as Dangerous Hospital Patient
Stephen Murray
as Chaplain
Lionel Jeffries
as Dr. Goovaerts
Niall MacGinnis
as Father Vermeuhlen
Eva Kotthaus
as Sister Marie
Molly Urquhart
as Sister Augustine
Dorothy Alison
as Sister Aurelie
Jeanette Sterke
as Louise
Errol John
as Illunga
Diana Lambert
as Lisa
Orlando Martins
as Kalulu
Penelope Horner
as Jeanette Milonet (uncredited)
Charles Lamb
as Pascin (uncredited)
Ave Ninchi
as Sister Bernard (uncredited)
Richard O'Sullivan
as Pierre (uncredited)
Frank Singuineau
as Murderer of Sister Aurelie (uncredited)
Elsa Albani
as (uncredited)
Gabriella Andreini
Juan Aymerich
Grazia De Rossi
Giovanna Galletti
Fred Zinnemann
Director
Robert Anderson
Screenplay
Kathryn C. Hulme
Novel
Stanley Browne
Technical Advisor
Marie-Louise Habets
Producer
Henry Blanke
Franz Waxman
Original Music Composer
Franz Planer
Director of Photography
Alexandre Trauner
Art Direction
Walter Thompson
Editor
Maurice Barnathan
Set Decoration
Marjorie Best
Costume Design
Hairstylist
Alberto De Rossi
Makeup Artist
Julien Derode
Production Manager
Chuck Hansen
Orazio Tassara
Bernard Vorhaus
Assistant Director
Sergio Leone
Italo Tomassi
Art Department Manager
Oliver S. Garretson
Sound
Robert J. Miller
Sound Recordist
Goffredo Bellisario
Camera Operator
Léo L. Fuchs
Still Photographer
Christian Ferry
Location Manager
Elaine Schreyeck
Script Supervisor
Sam Zebba
Second Unit
Conductor