The Iskat Empire rules its vassal planets through a system of treaties - so when Prince Taam, key figure in a political alliance, is killed, a replacement must be found. His widower, Jainan, is rushed into an arranged marriage with the disreputable aristocrat Kiem, in a bid to keep rising hostilities between two worlds under control. But Prince Taam's death may not have been an accident, and when Jainan himself is a suspect, he and Kiem must navigate the perils of the Iskat court, solve a murder, and prevent an interplanetary war . . .