AllMovie

Jenny (Ruth Chatterton) becomes pregnant by a young man who is killed in the 1906 San Francisco earthquake. Bearing her child in secret, Jenny gives up custody to a wealthy couple. The years pass, and through the auspices of a crooked politician (Louis Calhern), Jenny becomes the number one "madame" of San Francisco, with interests in several other illicit activities. Crusading district attorney Dan Reynolds Donald Cook decides to rid the city of Jenny's operations -- little suspecting that the notorious woman is actually his own mother.