The Age of Darkness — Christian Dunn

AFTER THE BETRAYAL at Isstvan V, Horns 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 Horns Heresy.

Age of Darkness enters a new chapter of the epic Horns Heresy story, and features stories from some of the Black Library's bestselling authors, including Dan Abnett, Graham McNeill, James Swallow and Aaron Dembski-Bowden.