A Great War is coming, and it will engulf the Imperium of Man. The Space Marines of the Alpha Legion, the last and most secretive of all the Legiones Astartes brotherhoods, arrive on a heathen world to support the Imperial Army in a pacification campaign against strange and uncanny forces. But what drives the Alpha Legion? Can they be trusted, and what side will they choose when the Great War begins? Loyalties are put to the test, and the cunning schemes of an alien intelligence revealed.

Read it because
It contains one of the most mindblowing revelations of the Horus Heresy, about the true nature of the primarch Alpharius. Not only that, but it introduces a load of new players into the war, including the mysterious alien Cabal and the even more mysterious Perpetuals.

The eBook edition includes integrated illustrations of characters and events from the story, and an afterword that places the story in context within the series.

A Horus Heresy Novel

Censured at the Council of Nikea for his flagrant use of sorcery, Magnus the Red and his Legion retreat to their homeworld to continue their use of the arcane arts in secret.

READ IT BECAUSE
One of the most tragic tales of the entire Horus Heresy unfolds as the Thousand Sons are brought low by their relentless quest for knowledge. Magnus is sure that he knows better than the Emperor – but isn't that what caused Horus to fall as well?

THE STORY
Censured at the Council of Nikea for his flagrant use of sorcery, Magnus the Red and his Thousand Sons Legion retreat to their homeworld of Prospero to continue their use of the arcane arts in secret. When the ill-fated primarch foresees the treachery of Warmaster Horus and warns the Emperor with the very powers he was forbidden to use, the Master of Mankind dispatches fellow primarch Leman Russ to attack Prospero itself. But Magnus has seen more than the betrayal of Horus – and the witnessed revelations will change the fate of his fallen Legion, and its primarch, forever.

Written by Graham McNeill.

After the betrayal at Isstvan, Horus begins his campaign against the Emperor, a galaxy-wide war that can lead only to Terra. But the road to the final confrontation between father and son is a long one – seven years filled with secrecy and silence, plans and foundations being formed across distant stars. An unknown history is about to be unveiled as light is shed on the darkest years of the Horus Heresy, and revelations will surface that will shake the Imperium to its very foundation... Age of Darkness enters a new chapter of the epic Horus Heresy story, and features stories from some of the Black Library’s best-known authors, including Dan Abnett, Graham McNeill, James Swallow and Aaron-Dembski Bowden.

Read it because
The first phase of the over, and the Age of Darkness begins. These tales show the state of the galaxy as war engulfs it and lay hints to what is to come.

The eBook edition includes integrated illustrations of characters and events from the story, and an afterword that places the story in context within the series.