Warhammer 40k - 2013 Advent Calender Short Story - Azrael: Protector of Secrets by C.Z. Dunn

Exemeter VII has fallen into rebellion, its governor declaring independence from the Imperium and leading the world into darkness. Now the Dark Angels and their allies from the Godesian Imperial Guard have arrived to return the Emperor’s light to this forsaken planet. As Supreme Grand Master Azrael and the commander of the Godesians approach the governor’s throne room, a deadly secret will be revealed. But deadly to whom?