Midnight Shadow (1939)

In a quiet, all-black Oklahoma community live the Wilsons, whose pretty daughter Margaret is courted by awkward Buster and suave stage mentalist Prince Alihabad. On one busy night, Mr. Wilson shows his valuables to Alihabad, who plans to elope with Margaret; a mysterious man hangs around while another burglarizes the house; and someone murders Mr. Wilson! Will the killer be caught by the police, or by bumbling correspondence-school detective Junior Lingley?