The Horus Heresy: The Master of Mankind

The daemon sensed movement. Motion prickled at its perception, jabs knifing against the searing muck of its thoughts. It abandoned its idle prowl, turning away from its explorations through the outward tunnels, drawn back to the site of its first hunt in this cold realm. It had to feed. Already its flesh steamed with the slow smoke of threatened dissolution. Stalking the infinite tunnels was, thus far, achieving little. Boundary servitors were chemical-blooded and grey of soul – their deaths offered scarce sustenance, yet they flooded the tunnels in numbers beyond the creature’s crude reckoning.

The soul it sensed now was brighter than those it had devoured before. The light of this new spirit gleamed through air and stone alike, a beacon amidst oily black vision. The pain of starvation lent conviction to the creature’s movements. It moved faster and faster, wraithing through the tunnels, between the ruins that populated them.

With no one else nearby – no one capable of intelligent conversation, at least – Alpha-Rho-25 allowed his annoyance to show across his angular and not particularly attractive features. In public, he looked like a man always on the edge of scowling. In private, he crossed over that edge and consistently indulged.

Servo-skulls drifted around him, scanning, always scanning. Their anti-gravitic gliding dispersed some of the higher tendrils of mist in their wake. Alpha-Rho-25 paid scant heed to the drones’ empty readings scrolling in Martian hieroglyphs across his vambrace monitor. If the osseous probes found what had done this, well, then he’d pay attention.

Instinctively, the prehensile mechadendrite attached to his spine slipped free from the bottom of his robes. The tail-whip gleamed with an armoured dataspike at its tip, more than capable of punching through a daemon’s ectoplasmic corpus. Alpha-Rho-25 let the coccyx-bonded tail rise up, scorpion-like, over his left shoulder.

Five years, he thought, stalking away from the Thallaxi and back to the slain servitors. Five years since he strode across the red dunes of Sacred Mars. Five years since he filled his respiratory tract with the metal-tasting holiness of Martian air.

And soon the conflict would be over, one way or another. All the violence and loss of life and materiel to reach beyond the Mechanicum’s sections of the webway, at last establishing a fortress at Calastar – meaningless. Each crusade vanguard that pushed out from Calastar to fight through the outward tunnels – meaningless. Tribune Kadai Vilaccan had led the most recent foray, and all calculations had signified a crushing victory. Yet not every qualifying factor had been available to insert into those equations. How could they have known what was streaming towards them through the outward tunnels?

Triumph had been torn from their grasp by sheer weight of numbers.

Severe casualties had been expected given the nature of their foes in this fascinating realm, but Alpha-Rho-25 had high enough clearance to know the truth. Their losses were far beyond the point of sustainability. The last five years had practically bled the Mechanicum’s Unifiers and their defenders dry, while the Ten Thousand could – at best – call upon perhaps a thousand remaining warriors. The Silent Sisterhood kept their numbers a mystery to all outside their order, but it was irrelevant – they had always been the rarest of breeds. They, like the Legio Custodes, like the Unifiers themselves, were a precision blade. Not a bludgeon.

Tribune Endymion had sent ambassadors to the surface but Alpha-Rho-25 was a pragmatic being. Reinforcements from outside the Imperial Dungeon, if they were even acquired, would be from weaker souls far less trustworthy than the vanguard’s current elite.

The fact that they would have to be extinguished for the secrets they had seen in the webway was irrelevant to the Protector. Let them die. There was no greater testament to a life than to lay it down for the Omnissiah’s Great Work.

Still, they might make useful daemon-fodder. Reborn as he was for the holy act of slaughter, the possibility of more briefly warmed him.

2

And the daemon sensed that warmth. It hunted a soul that knew death, one that had reaped life in the long years of its existence. Every butchered life was a scent and a flavour in its own right, needling at the meat of the daemon’s mind.

The creature latched its senses upon those memories of violence now, reaching for those bloodied edges of the soul’s aura, and its stalking sprint became a shrieking wind.

3

Alpha-Rho-25 crouched by AL-141-0-CVI-55-(0023) once more, scanning her with the ectoplasmic detectors in his palm-auspex. The cyborged woman had been thoroughly dismembered. Torn apart not by bladed weaponry but by brute strength. The wounds were rife with aetheric signifiers.