Cetaganda (Miles Vorkosigan Adventures)

Miles Vorkosigan and his cousin Ivan are sent on a diplomatic mission to the court of the Cetagandan Empire, Barrayar's former enemy. This sophisticated, genetically advanced but in many ways alien society both fascinates and repels, and when the Cetagandan Empress and her attendant die suddenly, Miles and Ivan find themselves embroiled in intrigues that are hard to fathom. Ivan's romances and Miles' infatuation with a nobel Cetagandan lady further complicate matters in this novel by four-time Hugo Award winner Lois McMaster Bujold.