The Word of the Silent King is a short story written by L.J. Goulding. It was released in December 2014 as part of the Black Library 2014 Advent Calendar.
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...