Book 1

Dark Imperium

by Guy Haley

Published 25 January 2018
The returned primarch Roboute Guilliman strives to save the Imperium from an era of death and darkness.

Fell times have come to the galaxy. Cadia has fallen, destroyed by the onslaught of Chaos. A Great Rift in the warp has opened and from its depths have spewed daemons and the horrors of Old Night. But all hope is not lost... A hero, long absent, has returned and with him comes the wrath of the Ultramarines reborn. Roboute Guilliman, the last of the loyal primarchs, has arisen from millennia in stasis to lead the Imperium out of darkness on a crusade the likes of which has not been seen since the fabled days of the Emperor. But never before have the forces of Ruin amassed in such numbers, and nowhere is safe from despoliation. From the dreaded Scourge Stars come the hordes of the Plaguefather, Lord Nurgle, and their pustulent eye is fixed on the Ultramarines home world of Macragge. As the Indomitas Crusade draws to an end, Guilliman and his army of Primaris Space Marines race to Ultramar and a confrontation with the Death Guard.

 

Book 2

Dark Imperium Plague War

by Guy Haley

Published 2 May 2019
Intent on rebuilding Ultramar, the returned primarch Roboute Guilliman wages war on the treacherous Death Guard – but the intervention of a greater power threatens all he works for.

In the void and upon the worlds of Greater Ultramar, the battle for the Imperium continues.

Intent on rebuilding his home realm and using it as base to reconstruct the ravaged stellar empire of mankind, the returned primarch Roboute Guilliman proceeds with his war to drive Mortarion and his Death Guard Traitor Legion from the domain of the Ultramarines.

But when Guilliman brings his brother to battle upon the diseased plains of Parmenio, the intervention of a greater power in their fraternal struggle threatens to upend the Imperial Regent’s understanding of the galaxy, and his place within it.

Primarchs and ideologies clash in this second, thrilling part of the Dark Imperium trilogy.

Book 3

Godblight

by Guy Haley

Published 1 September 2022
Book 3 in the Dark Imperium series.

The paths of Roboute Guilliman and his fallen brother Mortarion bring them inexorably together on Iax. Once a jewel of the Imperium, the garden world is dying, as the plans of the Lord of Death to use it as a fulcrum to drag the stellar realm of Ultramar into the warp come to deadly fruition.

 

While Guilliman attempts to prevent the destruction of his kingdom, Mortarion schemes to bring his brother low with the Godblight, a disease created in the Cauldron of Nurgle itself, made with the power to destroy a son of the Emperor.

 

Primarchs clash on the ravaged landscapes of Iax. The gods go to war, and the wider galaxy balances on a knife-edge of destruction. As something powerful stirs in the sea of souls, only one thing is certain – no matter who wins the last great clash of the Plague War, the repercussions of victory will echo through eternity…