Because she was blacklisted after being investigated by the House Un-American Activities Committee, Betsy Blair wouldn't make another film for four years, until she landed the role of Clara Snyder in Marty (1955). She was cast in "Marty" mainly because her husband, Gene Kelly, threatened to stop shooting at MGM unless they let her work despite being blacklisted.
MGM financial records say this film was a money loser for the studio, with a total loss of more than $650,000.