This 'lost' Michael Powell and Emeric Pressburger movie updates Strauss' operetta Die Fledermaus to post-war Vienna, with the city under occupation by the four Allied powers. A romantic romp starring Anton Walbrook, Michael Redgrave and Ludmilla Tchérina as the titular object of desire, its primary pleasure is Hein Heckroth's gaudy décor, and it's not hard to see why it was a critical and commercial flop. If you want to see P&P meld opera and cinema to dazzling effect, try their previous film The Tales Of Hoffmann.