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Gertrude Welcker was a German stage and screen actress.
From 1916 to 1919 she performed in Max Reinhardt theaters, Deutsches Theater Berlin, Kammerspiele, and Volksbühne.
She made her film debut in "Hans Trutz in the Land of Plenty" in 1917.
She ended her film career after 64 features in 1925.
She stayed on a couple of years in the theatre.
In 1941 she became a Red Cross nurse and escaped to Sweden as Gertud Carlsund.
Hinrich, the son of a feudal German landowner, falls in love with the beautiful daughter of one of his father's serfs despite opposition from both families. But when he actually offers marriage to her, this is going too far. The return of his brother Detlev, with an unscrupulous aristocratic bride of his own and a rival claim to their father's estates, proves to be the trigger for tragedy.
Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.
An alien from the planet Algol gives a man a device that creates enough energy to power the entire world.