In the ruined border town of Vincula, the newly formed Tanith First and Only and their commander, Colonel-Commissar Ibram Gaunt, are assigned to enforce a permanent peace. However, this thankless police action will prove as dangerous as any frontline—something is stalking the Ghosts through the streets, and soon the Tanith First will learn dark secrets about themselves that will echo through their history.

Long before the coming of the Imperium, the realm of Ultramar was ruled by Roboute Guilliman, the last Battle King of Macragge. Even after learning of his true heritage as a primarch son of the Emperor of Mankind, he strove to expand his domain as efficiently and benevolently as possible, with the XIII Legion Ultramarines as his alone to command.

For many long years, Gabriel Seth has led the Flesh Tearers to war. Master of a dwindling Chapter, he has made many enemies in his unceasing battle to keep his warriors alive - and now those enemies conspire against him, luring him to a remote world in order to end his leadership and life in the most violent and bloody way possible: Gabriel Seth is to be assassinated. But can even an Eversor Assassin kill one of the deadliest warriors in the entire Imperium?

In the aftermath of battle, Flesh Tearers Chapter Master Amit picks his way across the blasted landscape and is drawn into single combat with a survivor of the enemy force, a berserker dedicated to the Blood God. As they fight, Amit begins to realise that at slaughter's end, he and the servant of Khorne are not so dissimilar.

The Shattered Legions crew of the Sisypheum, broken and at the end of their endurance, find themselves divided - torn between following their resurrected captain on a suicidal mission or obeying orders to return to Terra and rejoin their Legion brothers. Following a series of garbled messages intercepted by the Kryptos, the divided warriors descend to the shattered surface of Luna. Here, their bonds of loyalty, duty, and their devotion to one another will be tested as ancient horrors of the earliest days of gene-manipulation are unleashed, and a long-buried secret is revealed.

The Relictors Space Marine Chapter are renowned for gathering artefacts of Chaos and delving into the secrets of the Dark Gods. Captain Vidarna and Apothecary Achaon are tasked with the interrogation - and torture if necessary - of a captured prisoner, a warrior of the Death Guard. After 10,000 years of war and corruption, what secrets might he yield? The pair attempt to find out, with hideous results.

Exile to the miserable world of Sedh, the disgraced Necron Lord Oltyx is consumed with bitterness. Once heir to the throne of a dynasty, he now commands nothing but a dwindling garrison of warriors, in a never-ending struggle against Ork invaders. Oltyx can think of nothing but the prospect of vengeance against his betrayers, and the reclamation of his birthright. But the Orks are merely the harbingers of a truly unstoppable force. Unless Oltyx acts to save his dynasty, revenge will win him only ashes. 

Of all the Emperor’s sons who fell to Chaos, it is perhaps Magnus the Red whose tale is the most tragic. Sanctioned because of his desire for knowledge, chastised, judged, and shattered to his very elements – there is much for the Crimson King to feel vengeful for. Yet revenge is not the only thing that draws him to Terra alongside the Warmaster’s besieging armies. He seeks something, a fragment, the missing piece of himself that lies within the most impregnable place on the planet – the inner sanctum of the Imperial Palace.

As part of an elite Deathwatch kill team, Brother Balthasar of the Dark Angels joins a special Inquisitorial mission to the eldar craftworld of Kher-Ys. Long ago ravaged by the daemonic forces of Slaanesh, the craftworld may still harbour the unlikeliest of allies for the Space Marines and the key to a greater victory for the Chapter.

Lord of Chemos and bearer of the Palatine Aquila, Fulgrim, primarch of the Emperor’s Children, is determined to take his rightful place in the Great Crusade, whatever the cost. A swordsman without equal, the Phoenician has long studied the art of war and grows impatient to put his skills and those of his loyal followers to a true test. Now, accompanied by only seven of his finest warriors, he seeks to bring a rebellious world into compliance, by any means necessary. 

In the lower reaches of Necromunda's Hive Primus, countless hired guns and bounty hunters seek to make their fortune by using their deadly skills to bring in criminals, outlaws and those unlucky souls who've fallen foul of the Guilders. Each of these rogues and killers is different, with particular skills that put them on their path. Neither heroes nor villains, they live in the grey areas - and in these three audio dramas, a trio of bounty hunters have their tales told.   

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. 

Before the being called the Emperor revealed himself, before the rise of the aeldari, before the necrontyr traded their flesh for immortal metal, the world was born in violence. Even when they inhabited bodies of flesh, Trazyn the Infinite and Orikan the Diviner were polar opposites. Trazyn, a collector of historical oddities, presides over a gallery full of the most dangerous artefacts - and people - of the galactic past. Orikan, a chronomancer without peer, draws zodiacs that predict and manipulate the future. 

Baggit is a fast-talking ratling sniper with a greedy eye and loose morals. Clodde is an ogryn, a brute with a core of decency and a desire for a better life. Two abhuman deserters turned thieves, at large in the monolithic city of Varangantua, where only the tough or the ruthless survive. Having landed in debt to a savage crime lord, Baggit and Clodde end up in the crosshairs of the meanest, most puritanical sanctioner in the city. 

Blade of Purity contains two linked tales of the Grey Knights: Incorruptible and True Name.