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The title tells all in the German comedy Die Falsche Ehemann (The Wrong Husband). As can be gathered, it's a mistaken-identity affair, with a married man being constantly mistaken for his unmarried twin brother. Star Johannes Riemann spends most of the picture running about in his underwear, which should give a good idea of the sort of subtle wit than can be expected here. The film was co-written by Billy Wilder, whose American comedies tended to avoid such obvious bedroom-farce cliches. As with most of his early screenwriting efforts, Wilder worked in collaboration with Paul Frank.