Book 7 in the fan favourite Space Marine Conquests series. For fans of huge and epic battles waged in the far futureConquered by the vile forces of the Word Bearers, the cemetery world of Perdition is dying. Its inhabitants expire while toiling in cruel mines, forced to desecrate holy relics of the Imperium. To save these souls, the Vanguard Marines of the Raven Guard, masters of shadow, begin a guerrilla war against the heretics. But the taint of Chaos runs deep, and Primaris Lieutenant Turan Raakis must rally the downtrodden mortals to lead a rebellion worthy of his primarch, Corvus Corax, if he is to free humanity from Perdition.