Her Private Secretary (German: Ihr Privatsekretär) is a 1940 German comedy crime film directed by Charles Klein and starring Gustav Fröhlich, Fita Benkhoff, Theo Lingen and Maria Andergast. It was shot at the Grunewald Studios in Berlin and on location at the Schloss Dammsmühle in Brandenburg. The film's sets were designed by the art directors Erich Grave and Fritz Lück.
When a charming young man arrives to serve as a private secretary for the eccentric Helene Kiepergass a, he quickly becomes entangled in a series of mysterious events in her house. Amidst the arrival of a suspicious "nephew" from Mexico and a house full of peculiar guests, a romance blossoms between the secretary and the lovely companion Mary. He eventually is able to unmask two confidence tricksters amidst the residents.