On the world of Tevrat, Callidus Assassin Klara Rhasc stalks her prey, awaiting the moment to strike. But when her mark is murdered by a crazed Eversor Assassin, Rhasc embarks on a new kind of mission: to find and subdue her fellow operative.

In the sprawling Imperium of Mankind, everyone serves the Emperor in their own way. From the inquisitors who hunt the hidden enemies of humanity in the dark places of the galaxy to the brave soldiers who stand on the front line, and the Imperial Assassins who can change the tides of war with a single shot, each has a part to play in preserving the Imperium. In this audio anthology, three of these disparate heroes are put to the test, each facing a personal crisis that will see them either fall to darkness, or rise to continue doing their duty in the Emperor's name.

For Ianthe, war is all too familiar. A former soldier in the Astra Militarum, she now serves Inquisitor Covenant as an agent of the Throne. Her first mission sees her investigating a cult called the Children of Eternity. Falling foul of the local Enforcers, Ianthe soon learns that war in the shadows is seldom straightforward and that the local, angry law-keepers are the least of her troubles.

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.

Two centuries ago, the Imperium of Man and the upstart Tau Empire fought to a standstill in the Damocles Gulf. Now, as the 41st millennium draws to a close, the tau have returned. As the world of Agrellan falls under attack, the White Scars and Raven Guard rush to its defence, but with the skilled Commander Shadowsun leading the alien forces, the Space Marines and their allies are hard pressed. Kor'sarro Khan, Huntmaster of the White Scars, swears that he will win the day in the most direct way possible – by taking Shadowsun's head.

On the world of Solennes, the battle between the forces of the Imperium and the heretics has become a stalemate of seemingly eternal artillery bombardments. The land is devastated, and the attempts to gain ground by either side end in disaster. Morale is low, and when Trooper Arehn is caught apparently fleeing the front lines, Commissar Selander does not hesitate in condemning him to a very public execution. When Selander starts to see Arehn after his death, he follows the apparition, wracked by doubts - but what will he find?

Sister Adamanthea is an oddity among the Adepta Sororitas - a Sister Repentia who has been cleansed of her sin and returned to her duty, rather than finding penance in death. Seen by the faithful as a living miracle, she herself is unsure. Still feeling the weight of her crime, she wonders if she belongs in the sisterhood at all. When she is forced to appear with a famed priest on a most holy day, Adamanthea's doubts itensify...until disaster strikes.

When the underhive bounty hunter Arturos delivers a renegade Goliath to the Guilder Meriko, he expects his payment of 60 credits for the capture. But Meriko has taken out more bounties than he can afford, and payment isn't forthcoming.... Luckily for him, among the junk in his shop is a treasure that's worth Arturos' time and effort. A Spiraptor, a mechanical bodyguard programmed to protect a wealthy individual, it sends Arturos on a quest that could make his fortune - or claim his life.

A restless menace threatens the town of Wyrmditt. Stirred from his grave by fell magic, Sabrodt, the Shrouded King, seeks dominion over the kingdom he failed to claim in life. So great is the terror inflicted upon the lands by Sabrodt and his nighthaunts that Sigmar, God-King, sends a retinue of his warriors most skilled in the art of Azyrite magic to liberate the town. The Stormcast Eternals of the Sacrosanct Chamber are warrior-wizards, imbued with arcane knowledge and the power to wield the energies of the storm in battle.

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

Kharn the Betrayer takes to the field of battle as the champion of his old comrade Argus Brond, but his own motives go far beyond the petty squabbling of rival Chaos warlords....

After seven long years of conflict, the Horus Heresy nears its end. But now, as the Warmaster Horus marches on Terra to rip his father from the Throne, the seat of the arch-traitor’s power lies empty. Cthonia, a world once dominated by brutal murder-gangs, is occupied by the Emperor’s praetorians—the indomitable Imperial Fists. For the Sons of Horus, this outrage demands a reckoning.

The Night Lords were once among the most potent forces of the Imperium, Space Marines who used fear itself as their weapon. Now, cast adrift from the Emperor's light and hunted as heretics after their monstrous betrayal, the Night Lords clad themselves in symbols of death and fight the Long War, bringing pain and terror to all who worship the corpse-god of Terra. A summons from Warmaster Abaddon sends these rebels on a dangerous journey that leads inexorably to a conflict with the Emperor's chosen warriors, the Blood Angels.

Belisarius Cawl, Archmagos Dominus of the Adeptus Mechanicus, is the most brilliant mind alive. For 10,000 years he has furthered the cause of mankind, working under the aegis of the Emperor and Lord Commander Roboute Guilliman to prevent the inexorable march of the alien and the traitor. Many call him heretic, but all must recognise the magnitude of his achievements, for who else but he was entrusted to create a new generation of Space Marines?

After a disastrous mission leaves their ranks decimated, Sergeant Zachariah must rapidly train a fresh batch of recruits to restore the 158th Elysian. The regime is harsh, lethal, and only the best will survive to become full-fledged drop troopers. But when a savage feud with a high-ranking officer threatens the 158th and Zachariah and a handful of men barely out of training are sent on a deadly reconnaissance mission, he begins to wonder if his life might also be in jeopardy.