Alfred Hitchcock: And So Died Riabouchinska (1956)

Fabian is a vaudeville ventriloquist. One night, the body of a murdered man named Ockham is found near the theater where Fabian is performing. Detective Krovitch begins an investigation. He learns that shortly before the murder, Ockham tried to see Fabian. Krovitch questions Fabian and his wife and notices that Fabian is more interested in his female marionette Riabouchinska than his wife. Later Krovitch sees Fabian act and begins to question the ventriloquist's mental state. During the performance, Fabian and Riabouchinska act like lovers. Krovitch checks police files for photos of missing girls. He finds one that resembles Riabouchinska. The detective confronts Fabian, who admits he had a relationship with the girl and that Ockham found out about it. Ockham also knew that the marionette was created in her image. Fabian also confesses to killing Ockham after he had demanded hush money to keep quiet about Fabian's relationship to his puppet. The confession, however, comes not from Fabian's mouth, but from that of his doll Riabouchinska.
–––––––––-
In einem kleinen Theater wird ein Mann tot aufgefunden, und eine Spur führt zu dem Bauchredner Fabian, für den seine Puppe Riabouchinska eine besondere Bedeutung zu haben scheint. Im Zuge seiner Ermittlungen entdeckt Inspektor Krovitch eine verblüffende Ähnlichkeit zwischen der Puppe und einem Mädchen, das vor Jahren verschwand.