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 spew 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 has arisen 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. 

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. 

After a series of victories, the Imperial forces are on the back foot once more. The power of Chaos is rising, the Traitors gain ground, and all hope seems lost. Can Terra endure? 

Exiled from the Ultramarines Chapter by Marneus Calgar, Captain Uriel Ventris ventures deep into the dreaded Eye of Terror to atone for his disgrace. There, Uriel must unleash the Emperor's vengeance upon the followers of the Dark Gods and bring His divine light to this area of darkness. But a far more terrible foe dwells within these worlds of insanity: the ancient Chaos Space Marine Legions. With dishonour behind him and certain death ahead, Uriel must gather every ounce of courage if he is to survive and regain his honour!

On the battlefields of Aexe Cardinal, the stalwart forces of the Imperial Guard are locked in a deadly stalemate with the dark armies of Chaos. Colonel-Commissar Ibram Gaunt and his regiment, the Tanith First and Only, are thrown headlong into the living hell of trench warfare, where death by an unseen enemy is always just a moment away. The only chance for Gaunt and his lightly armed scouts to survive is to volunteer for a mission so dangerous that no one else dares accept it.

Cadia, 10,000 years a stalwart bastion against Chaos, is broken. Its collapse at the hands of Abaddon and the Thirteenth Black Crusade has fractured the Imperium of Man, and in its wake spreads the seeds of heresy, lies and insurrection. It falls to Cadia’s survivors to fight on, bloodied but unyielding, in the name of the Emperor. On the world of Malouri, traitorous forces have retreated to the impregnable island fortress of Crannog Mons.

As the Indomitus Crusade begins, fleets of mighty warships leave Terra on a vital quest to stabilise Imperium Sanctus in the wake of the Great Rift. The returned primarch, Roboute Guilliman, leads a huge force towards the shrine world of Gathalamor, where stable warp routes will allow the flotilla to spread across the beleaguered southern half of the Imperium.

In the darkness beyond the galaxy, there are monsters. Some swim closer to the light, drawn by the beacon that is the Astronomican, while others stalk the Void, predators in the dark. The Carcharodons have hunted for millennia, but now they are drawn into a new blackness...the Dark City of the drukhari itself. Commorragh. For a thousand years, Chaplain Tangata Manu has searched for a relic lost under his watch: an ancient thing, once charged into the keeping of the Forgotten One himself. But at the brink of seeing his hunt fulfilled and the relic returned, it is stolen from under him.

A great darkness has befallen the galaxy, and the armies of Chaos are rampant. To survive, humanity must retaliate and take back what they have lost. By the will of the reborn primarch, Roboute Guilliman, is the Indomitus Crusade launched - a military undertaking that eclipses all others in known history. From the Throneworld of Terra does the Avenging Son hurl his fleets, their mission the very salvation of mankind.

In the city of Queen Mab, nothing is quite as it seems. Pariah, spy and Inquisitorial agent Alizebeth Bequin is all of these things and yet none of them. An enigma, even to herself, she is caught between Inquisitors Gregor Eisenhorn and Gideon Ravenor, former allies now enemies who are playing a shadow game against a mysterious and deadly foe. Coveted by the archenemy, pursued by the Inquisition, Bequin becomes embroiled in a dark plot of which she knows not her role or purpose.

On Periremunda, the populace are rioting. With local forces unable to contain the widespread civil disorder, Commissar Cain and his regiment of Valhallans are called in to help. However, it seems there is more to the rebellion than first appeared, and Cain suspects sinister forces at work behind the scenes. When the commissar is reunited with Inquisitor Amberley Vail, it seems his fears are realised. In this the fifth book in the popular Ciaphas Cain series, our hero is thrown into a deadly conspiracy that even he might not be able to emerge from alive.

Legends abound of the glorious - or infamous - deeds of the emperor's sons. Yet almost nothing is known of Alpharius, the most mysterious of them all, for the lord of the Alpha Legion is unparalleled in the art of obfuscation. Such are his gifts of secrecy and deceit that even his rediscovery has remained an enigma - until now. But when the tale comes from the serpent’s mouth, where do the lies end and the truth begin?

Ahriman, greatest sorcerer of the Thousand Sons and architect of the Rubric that laid his Legion low, continues to walk the path towards salvation, or damnation. Searching for a cure for his Legion, he is forced to consider - was the great ritual somehow flawed from the very beginning? The answer may lie within the mysterious artefact known as the Athenaeum of Kalimakus, a grimoire of forgotten knowledge that is reputed to contain the exact words of the lost Book of Magnus...or, perhaps, even a transcription of the primarch’s deepest and most secret thoughts. 

Dark secrets lurk in the Fallen Dome of Periculus, and Tempes Sol of the Guild of Light seeks them out to cement his place in the underhive - if he, and Hive Primus itself, can survive what he unleashes. 

Kept alive and imprisoned for 10 thousand years, Luther is the curse and the salvation of the Dark Angels made manifest. None are so close to the heart and history of the Chapter as the man that embodies all that was great about the First Legion and all that is shameful about the Dark Angels. In his story is writ the tale of the Horus Heresy and the fall from Enlightenment in a single long life. Glory, honour, pride, shame and betrayal weave a tapestry of truth and lies that the Supreme Grand Masters of the Dark Angels have sought to understand and unbind across 10 bloody millennia.