X Marks the Spot (1931)

In this crime drama, the writer of a Broadway newspaper column finds himself accused of murder after a showgirl, who had been suing his paper for libel is found murdered. Just before she died, the columnist had been seen leaving her apartment. He launches his own investigation and discovers that he has met the real killer. The whole matter comes to a head during the ensuing trial and in the end, the writer and the killer end up locked in a room and are forced into a shoot out.