At the height of the Cold War, the secret police in East Germany, the Stasi, came up with a novel idea to recruit informants in the West. They sent out a number of dashing spies, nicknamed Romeos, whose job it was to seduce secretaries working in embassies and NATO. Once under their spell, the Romeos would trick the women into handing over secrets. Angus Crawford reports for the BBC World Service on the victims of Stasi's unusual methods.