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Käthe von Nagy (born 4 April 1904 in Szabadka, Austria-Hungary, today Subotica/Serbia, as Ekaterina Nagy von Cziser) was an Hungarian actress, model, dancer and singer, part of an aristocratic Serbian family.
Between 1927 and 1952 she was active in German, French, Italian and Austrian cinema.
She died of cancer in 1973, in Ojai, California, aged 69.
A famous violinist enlists in a music school in order to woo one of the students.
Two journalists from different papers are looking for the same story. They want to know, who a group of gangsters getting young women from Europe to South America, where they are forced to work in brothels. But the gangsters have their own battels against each over, so the journalists can escape the danger, in which they've brought themselves.
Ave Maria was the second film-starring vehicle for legendary operatic tenor Beniamino Gigli. Mourning the loss of the only woman he ever loved, concert singer Tino Dossi (Gigli) is temporarily shaken from his doldrums by vivacious Montmartre entertainer Claudette (Kaethe Von Nagy). Dossi doesn't realize that Claudette is merely using him to advance her own singing career. Ultimately won over by Dossi's sincerity and courtesy, Claudette falls in love with him for real, only to suffer the pangs of conscience as a result. About to kill herself, she decides instead to return to Dossi's arms, vowing never to confess her original mercenary intentions.
In a harbor bazaar of the Pacific town of Kona, the young sailor Kiwe is offered a mysterious bottle, which supposedly gives her owner power and wealth and should fulfill all his wishes. The required return is however high. From now on, the soul of the new owner belongs to the devil.
Käthe von Nagy plays Ronny, who designs the costumes for the upcoming premiere of an opera written by the young prince of Perusa (Willy Fritsch) and has to deliver them personally due to the urgency of the commission. Arriving there, the prince not only is charmed by the young lady (who wouldn't?), but also mistakenly believes her to be the famous singer who is to be the female lead in the opera. What Willy does not know yet is that the real singer has cancelled her appearance, and as the state ministers hope to distract him from politics with the performance of the opera, they indeed want Ronny to appear in the show….
Ronny is a young designer on her way to the capital of the Ruritanian Kingdom of Perusa with the costumes she has created for the operetta written by the Prince. On her journey, she meets the prince and is persuaded to take the place of the star who had just walked out. The prince falls for Ronny but how can he marry a commoner?