He reports this to his superiors in Military Intelligence (although he is little more than an office-boy), and they reluctantly agree that only Eric, having heard the tune, will be able to lead them to the centre of the plot. Eric is persuaded to pose as a British agent – the recently deceased Major Cavendish – who had managed to infiltrate SCHLECHT. After a few set-piece comedy interludes, the tune is identified and the plot switches to a performance of "Swan Lake" at the projected venue for the assassination, where the star Russian ballerina Madame Petrovna (April Olrich) is in grave danger.