Saint Sabbat has brought a miracle to the war-torn city of Ghereppan, but one battle is not the war. The voice of Magister Sek still haunts the Imperial forces, defying their victory and mocking their faith. Between the trickery of the Archenemy and the mercurial visions of the Saint, the Space Marines of Damocles Squad must find the truth: is this their one chance for a final victory on Urdesh, or is it a trap that could destroy them all?