Boston Blackie and the Law

Boston Blackie and the Law is the twelfth of fourteen Columbia Pictures films starring Chester Morris as reformed crook Boston Blackie.

Blackie eventually locates the money in Janis safety deposit box and takes it, still disguised as Jani. Outside, Dinah forces him at gunpoint to give her the envelope containing the loot, but when she opens it, it is empty. Blackie had taken the precaution of pocketing the money. In the meantime, Blackies friend returns home from a trip early and finds Janis body in the closet. Farraday corners and arrests Blackie and his sidekick, the Runt George E. Stone, for murder. Blackie easily escapes from his cell.Returning to the theatre where Jani performed, he finds an armed Irene over Dinahs lifeless body. She admits she herself was after the money all along. She makes Blackie hand it over, before calling the police. When Farraday and his dimwitted assistant, Sergeant Matthews Frank Sully, arrive, Blackie tells them he recorded Irenes confession when he turned on the radio for some music. When he plays it for them, Irene tries to run, but is caught and taken away. Blackie then informs Farraday that there was no recording he merely used ventriloquism to reenact his part of the prior conversation to fool Irene. ........

Source: Wikipedia