The Empress Seda is regaining control over those imperial cities who refused to bow the knee to her, but she draws her power from something more sinister than mere armies and war machines. Only her consort, the former spymaster Thalric, knows the truth, and now the assassins are coming and he finds his life and his loyalties under threat yet again.

Out past the desert of the Nem the ancient city of Khanaphes awaits them both, with a terrible secret entombed beneath its stones...