The Trial of Mary Dugan(1931)

Alternate language version of "The Trial of Mary Dugan" (1929). Has Mary Dugan stabbed her rich sugar daddy, Edgar Rice, to death? The evidence is overwhelming, no reasonable doubt seems possible, the trial should be a formality. But suddenly a young man raises his voice, introducing himself as Jim, Mary's brother. With his sister's financial assistance he has studied law; but never before has he practiced his job inside of a court room.