Moyna MacGill found incredible success as an accomplished actress, appearing in a variety of films throughout her career. Debuting in roles such as the drama "The Picture of Dorian Gray" (1945) with George Sanders, "Black Beauty" (1946) with Mona Freeman, and the Lana Turner drama "Green Dolphin Street" (1947) was where MacGill began her career in film. She went on to tackle roles in "Texas, Brooklyn and Heaven" (1948), the Jeanette MacDonald musical comedy "Three Daring Daughters" (1948) and "Private Angelo" (1949). She also appeared in "The Twilight Zone" (1959-1964) and the adaptation "My Fair Lady" (1964) with Audrey Hepburn. Toward the end of her career, MacGill acted in the Debbie Reynolds comedic adaptation "The Unsinkable Molly Brown" (1964).