Cetaganda

When the Cetagandan Empress dies, Miles Vorkosigan and his cousin Ivan Vorpatril are sent to Cetaganda for her funeral as diplomatic representatives of Barrayar. But when the lifelong attendant of the Empress is found murdered, Miles and Ivan find themselves in the thick of things. Miles tries to play detective in a strange, complicated, and deceptively alien culture, while lacivious Ivan manages to get himself involved with several noble females at the same time - a diplomatic no-no of the first order. As the plot thickens, it becomes clear that to save the Empire, it's up to Miles to do the job. He doesn't mind exactly, but... an adversary's Empire?