The Secret of Madame Blanche is a 1933 American pre-Code drama film directed by Charles Brabin and written by Frances Goodrich and Albert Hackett.

After being assured of her legal defeat, Sally goes to St. Johns pleading for the return of her son on any terms, and is rudely rebuffed, banned from all contact with the family, and threatened with prison if she persists.

During World War I, Leonard Junior (Douglas Walton), now grown and in uniform as a British serviceman, visits the bordello with a date, hoping to obtain a room, which isn't available, and meets Sally, with neither aware of the other's identity.

When he becomes drunk and disorderly he is knocked unconscious and Sally takes care of him, learning his identity from his date, whom she sends home with carfare.

Leonard is sentenced to two years in jail for the shooting, and when Sally visits, the two plan their long-delayed trip to America as mother and son.