Sœur Sourire
"The Singing Nun" is a 1966 American semi-biographical film, directed by Henry Koster and with a screenplay by John Furia and Sally Benson. Based loosely on Deckers' life to that point in time, it stars Debbie Reynolds in the title role and also features Greer Garson, Ricardo Montalbán, Agnes Moorehead, Katharine Ross, Chad Everett, and Ed Sullivan as himself.