Dropsite Massacre is a stand-alone novel set in the Horus Heresy, published by Black Library and written by John French. This paperback edition brings one of the most pivotal and horrific conflicts in Warhammer 40,000 lore to life in unprecedented detail.
Horus has rebelled against the Emperor, purging the Legions of his and his brother's loyalist forces, but what was meant to be a secret act of murder has been revealed. In the Emperor's name, Rogal Dorn and Malcador the Sigillite dispatch the largest force of legionaries and primarchs ever assembled, intent on ending Horus' rebellion before it can take root.
But the loyalists marching toward vengeance do not yet grasp the full depth of the treachery that awaits them. They will not be the perpetrators of a massacre, but its victims, as the last hope of restoring the Great Crusade and the unity of the Imperium is extinguished in the dust of Isstvan V, plunging the galaxy into a new age of darkness.
This is the deepest exploration yet of the infamous Dropsite Massacre, a defining moment of betrayal that reshaped the fate of the Imperium. Fans of the Horus Heresy series will find this an essential read, offering fresh perspective and harrowing detail on events long referenced throughout the saga.