The Redeeming Sin (1929) is a crime drama part-talking silent film with Vitaphone music and sound effects. It was produced and distributed by Warner Bros. and stars Dolores Costello. This film is currently a lost film.
| Actor | Role |
|---|---|
 Dolores CostelloJoan Billaire | Joan Billaire |
 Conrad NagelDr. Raoul de Boise | Dr. Raoul de Boise |
 George E. StoneA Sewer Rat | A Sewer Rat |
 Philippe De LacyPetit | Petit |
 Lionel BelmoreFather Colomb | Father Colomb |
 Warner RichmondLupine | Lupine |
 Nina QuarteroMitzi | Mitzi |
 Louise CarverNot listed | Not listed |