The Glass Assassin: On Scintilla, Hive Tarsus dominates trade off ­world and generates large tithes for the Imperium. Traditionally each decade, Lucius, the Lord of Tarsus makes a Progress as he travels the desert in a Leviathan vehicle, collecting the Emperor’s tribute and fealty from the lesser habitations throughout his domain. Inquisitor Haxtes Atellus Victus is on the trail of a dangerous cult that has infiltrated the court. He is seriously injured and the Acolytes are enlisted to support his effort.