The Word of the Silent King (eBook‪)‬

The Blood Angels and necrons, locked in a long and bitter war for the fate of the Gehenna system, are both endangered by the arrival of the monstrous tyranids. When the Silent King himself makes overtures of alliance, Commander Dante of the Blood Angels enacts a dangerous plan that could rid the Imperium of the Silent King forever – but when the two leaders meet at Devil’s Crag, everything changes…

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One of Warhammer 40,000's great mysteries is explored. Why did The Blood Angels ally with their Archenemy the Necrons at Devil's Crag? This story may have the answers.