Marune: Alastor 933

A mysterious amnesiac is found at a distant spaceport. The science of the Alastor Cluster is unable to do anything but determine his home planet and culture: he is a Rhune from the planet Marune - Alastor 933. When he returns home, he learns that he is a powerful landowner whose household is faced with an important alliance. But which of these scheming nobles destroyed his memory?