The Case of the Black Cat (1936)

Lawyer Perry Mason is summoned to the Laxter mansion in the dead of night to write granddaughter Wilma out of invalid Peter Laxters will to keep her from marrying suspected fortune hunter Doug Peter dies in a mysterious fire and Laxters two grandsons Sam Laxter and Frank Oafley inherit his estate on the condition old caretaker Schuster and his cat Clinker are kept on When cathating Sam threatens Clinker Perry steps in and learns Laxters death was suspicious and the family fortune and diamonds are missing Schusters found dead in his basement apartment Laxters nurse Louise is murdered with Schusters crutch and circumstantial evidence brings Doug to trial for Louises death Masons investigation produces a surprise witness who turns the trial around Written by Sister Grimm