"Two lovers you'll never forget.....SHE a spy....knowing him to be her enemy. HE knowing her only as a woman..lovely, desirable...One Night of Ecstacy!"
When war is declared in 1914, glamorous Russian Carla Vanirska manages to get to Vienna from Luxembourg, with the help of Captain Rudolph Ritter of the Austrian army. Meanwhile, Ritter is assigned to detect the identity of a spy.