The Thirteenth Chair is a 1929 American mystery film directed by Tod Browning. The picture is based on a 1916 play of the same name by Bayard Veiller. It stars Conrad Nagel, Leila Hyams, and Margaret Wycherly.
Inspector Delzante (Bela Lugosi), investigates a pair of murders near a British mansion in Calcutta. Helen O'Neill (Leila Hyams) becomes a chief suspect based on circumstantial evidence. A fake Irish medium, Madame LaGrange (Margaret Wycherly), is called in to try to help solve the first murder.