Nigel Bruce,Risë Stevens,Terry
Maria and Karl Lang are the singing duo of Vienna. Maria is very flirtatious and Karl very jealous. Karl decides to masquerade as a Russian guardsman and attempts to make Maria flirt with him - to test her loyalty to him. As the Russian, Karl makes a vigorous attempt to seduce Maria. For a moment she accepts then rejects him. Karl is left in turmoil.—Kelly