*It's identical to the first prototype we designed for the theta-wave enhancer.'

*So it is,' said Mellicin. *I can't believe I didn't notice that.'

*Poorly machined though,' said Zouche, circling the throne and running his fingers over the metal. *And why gold? Far too soft a material.'

Zouche picked up a golden helmet that sat on the ground behind the throne, and Dalia realised that Zeth had clearly run into the same problems they had. Caxton knelt beside an open panel in the side of the throne, Severine's eyes lingered on its well-proportioned occupant and Mellicin drank in every detail of the chamber.

*You had us build the device for this chamber,' said Dalia.

*I did,' confirmed Zeth.

*So what is it?' asked Mellicin, looking up at the mult.i.tude of psykers staring down at them with blindfolded eyes.

*It is the Akashic reader,' said Zeth. *It is the device I have devoted my life to constructing. With its power, I shall free the galaxy of the shackles that bind us to dogma, repet.i.tion and blind devotion to tradition.'

*How will it do that?' asked Dalia.

Zeth approached Dalia and placed her gloved hands upon her shoulders.

*I was instructed in the ways of the Mechanic.u.m by Adept Cayce, who was in turn educated by Adept Laszlo, an explorator and hunter of antiquities. Laszlo made many forays to the third planet in the years before the union of Mars and Terra, seeking out the remnants of technology left behind by the ancients. Buried beneath the great crater of Kebira in the land of the Gyptus, Laszlo discovered a great tomb complex, a vast sepulchre selfishly guarded by the tribes of the Gilf Kebir.

*Laszlo's Skitarii easily overcame the tribesmen, and the secrets he discovered beneath the sands... so many remnants of times long forgotten and technologies thought lost forever. Secrets of energy transference, atomic restructuring, chemical engineering and, most importantly, the evolution of human cognition and communication through the noosphere.'

*The noosphere?' interrupted Dalia. *Is that what I saw between you and Rho-mu 31?'

Zeth nodded. *Indeed it was, Dalia. To those noospherically modified, information and communication are one and the same, a form of collective consciousness that emerges from the interaction of human minds and where knowledge becomes visible in shoals of light.'

*So why can I see it?' asked Dalia. *I haven't been... modified.'

*No,' agreed Zeth. *You have not, but your connection to the aether renders you sensitive to such things, and as you develop your abilities, you will see more and more of the information that surrounds you.'

*The aether?' said Caxton. *That sounds dangerous.'

*To the untutored mind, it can be,' said Zeth, moving to stand beside the golden throne. *It is a realm of thought and emotion that exists... outside of the physical realm. But with the proper development, your gift will allow us to reach further into the realms of knowledge than ever before. We will be able to read the Akashic records, a repository of information imprinted on the very fabric of the universe a a wellspring of every thought, action and deed that has ever existed or ever will exist. It is what allowed the ancient cultures of Old Earth to build their impossible monuments and learn of things forgotten by later generations.'

Dalia felt her heart race at the thought of learning such things. The flow of information that had come to her station in the Hall of Transcriptions now seemed a paltry thing next to the prospect of being able to know every sc.r.a.p of knowledge the universe contained. She had the feeling that Zeth wasn't telling them everything about the aether, but her desire for knowledge outweighed any thoughts of the danger.

*This device,' said Dalia, standing before the man on the throne. *It's meant to tap into this... aether and read information?'

*That is exactly its purpose,' agreed Zeth.

*So why isn't it working?'

Zeth hesitated and Dalia saw the adept's reluctance to admit to the limits of her achievements. *Knowledge is power, guard it well. It is the mantra of the Mechanic.u.m and with great knowledge comes great power. But neither great knowledge nor great power come without sacrifice.'

*Sacrifice?' said Zouche. *Don't like the sound of that one bit.'

*The aether can be a realm of great danger,' explained Zeth, *and the universe does not easily part with its secrets.'

Zeth placed a hand on the shoulder of the unconscious man on the throne. *A great deal of energy, both physical and psychic, must be expended to tear open the gates of the aether and link an empath with the Akashic records. Even then, the human mind can only stare into the aether for the briefest time before overloading.'

*Overloading?' asked Severine, looking up from her contemplation of the man. *Does that mean it kills them?'

*Many die, Severine, but most simply shut down, their brains reduced to fused ma.s.ses of pulpy organic matter,' said Zeth, *but in the fleeting moments when they are connected to the Akasha, we learn such wonders as you would not believe.'

Dalia glanced up at the psykers embedded in the walls of the chamber, understanding that they were the mortal fuel used to power this device. The thought was unpleasant, but as Adept Zeth had said, great power and knowledge did not come without sacrifice.

She saw the connections in her mind, working the logic of what she and the others had built with what Adept Zeth was telling them.

*The theta-wave enhancer will support the mind of the empath and allow him to remain linked with the aether for much longer.'

*That is what I hope, yes,' said Zeth. *I believe you already possess a natural connection to the aether, Dalia, which is why you are able to make leaps of technological advancement beyond even the most gifted adept of Mars. Together we can unlock the secrets of the universe! Tell me that does not sound like a goal worth pursuing.'

Dalia was about to answer when an alarming thought suddenly occurred to her and she took a step back from the golden throne. *You're not planning on strapping me into that thing are you?'

*No, Dalia, set your mind at ease on that,' said Zeth. *You are far too valuable to me to expend your gift in so thoughtless a manner.'

The words were no doubt intended to be rea.s.suring, but Dalia felt a chill that had nothing to do with the proximity of the psykers travel the length of her spine. It was a stark reminder that she was not a free agent; she was the property of the Mechanic.u.m and her fate lay in the hands of Adept Koriel Zeth.

For all her apparent humanity, Zeth was a race apart from Dalia.

Two individuals born to the same race, but divided by a gulf of belief and ambition.

For all that, Dalia still wanted to be part of Zeth's designs. She looked around at her colleagues and saw that same desire.

*When do we begin?' she asked.

*Now,' said Zeth.

TECH-PRIESTS AND enginseers filled the cavern set into the sheer walls of the Arsia Chasmata with the sounds and flickering lights of their efforts. Sparks flew from angle grinders and welders, hoists lifted great panels of armour, and the droning chants of the Sanctifiers Mettalus echoed from the walls of the repair facility.

Reclining in the repair bay, the war-scarred form of Equitos Bellum lay dormant as the artificers of the Knights of Taranis restored it to its former glory. Fortis Metallum and Pax Mortis had already been repaired and resanctified, the damage they had suffered in the reactor's fireball nowhere near as severe as that done to Maven's mount.

Raf Maven watched the labours from a gantry above, his thin lips pressed tightly together as he watched the work below. He watched a team of enginseers directing a servitor-manned hoist as it swung a fresh armagla.s.s canopy over the wounded machine.

Maven winced, lifting his hand to his eye as he remembered the sympathetic pain of impact when his canopy had cracked.

His mount had been wounded badly by the enemy machine, and Maven with it. When Old Stator had found him unconscious in the wreckage of the destroyed reactor, Maven had been blind, his senses withdrawn in perceived pain. Psychostigmatic bruises and lesions covered his torso, which had nothing to do with the wounds he had suffered when Equitos Bellum had fallen in the wake of the explosion.

Only the transient protection of the building he had taken shelter behind had saved him from the blast, and healers of both flesh and steel proclaimed it a miracle that he and his mount lived at all.

Protectors and bulk transporters despatched from Ulysses Patera had brought them back to their order's chapter house in the Arsia Chasmata, the plunging canyon on the north-eastern flank of Arsia Mons.

Here, the work to restore man and machine had begun.

Maven's superficial wounds had responded quickly to treatment, his broken ribs set and his burns repaired with synth-skin. The stigmatic wounds took longer, seeming to heal in time with the repairs effected on Equitos Bellum.

His mount was without its colours, naked in its steel, its bodywork exposed to those who worked to restore its machine-spirit. Only the firedrake carving on the skull-c.o.c.kpit had survived the molten heat of the explosion intact.

Watching the men and machines working on his mount, Maven wanted to tell them to get out, to leave the ministrations and repairs to him, but that was just his hurt pride talking. The artificers of the Knights of Taranis knew their craft and no better healers of metal could be found outside the priests that attended the t.i.tan orders.

*Still here?' said a voice from the end of the gantry.

*Aye, still here, Leo,' he said without turning.

Leopold Cronus joined him at the gantry, his comrade-in-arms leaning on the railing and looking down at the noisy work going on below.

*How soon before it walks again?' asked Cronus.

*Not soon enough,' snarled Maven. *Can you believe they were going to sc.r.a.p Equitos Bellum?'

Cronus shook his head. *A mount with so fine a pedigree? Madness. Thank the Machine for the Old Man, eh?'

When Maven had begun to suspect that the master of the forge was going to condemn Equitos Bellum, he had pet.i.tioned Lords Caturix and Verticorda to intervene to save his mount. By the time the battle a.s.sayers had finished their inspection, there had been no word, and the giant breaker-servitors were standing by.

Maven had placed himself between them and Equitos Bellum with his sidearm drawn. He remembered the lethal purpose filling him as he prepared to defend his wounded mount.

With the breakers moving in and Maven ready to kill, word had come down to the repair hangars from the Lightning Hall.

Equitos Bellum was to walk again.

Maven had stood vigil over his stricken machine ever since, as though fearing the order to restore Equitos Bellum to a war footing could be rescinded at any moment.

Cronus put a rea.s.suring hand on Maven's shoulder.

*Your mount will be battle ready before you know it.'

*I know, but I wonder if it'll ever be as it was before.'

*How so?'

*Ever since the battle at Maximal's reactor I've felt... I'm not sure, a sense of things unfinished, as if neither of us will be whole again until we avenge ourselves.'

*Avenge yourselves on what?' asked Cronus. *Whatever attacked the reactor was destroyed in the explosion. It's a d.a.m.ned miracle you survived.'

Maven pointed to the damaged Knight. *I know it's a miracle a as surely as I know that whatever did this is still out there. Equitos Bellum can feel it out there and so can I.'

Cronus shook his head. *That's just lingering somatic pain-memory. It's gone, Raf.'

*I don't believe that and nothing you say to me will convince me otherwise,' said Maven. *It was void protected, Leo. It could easily have survived the explosion and escaped into the pallidus wastelands or the deep canyons of the Ulysses Fossae.'

*I read the after-action report,' said Cronus. *But void-shielded? Only t.i.tans have voids. Maybe it just had reserve power fields.'

*Yeah, or maybe I just missed,' snapped Maven. *Or maybe heat bloom from the reactor made it look like it was shielded. d.a.m.n it, Leo, I know what I saw. It was shielded and it's still out there, I know it.'

*What makes you so sure it's still out there?'

Maven hesitated before answering. He looked up into Leopold's stolid face and knew that of all the people he could talk to about his lingering suspicions without fear of ridicule, it was Cronus. *I couldn't feel anything from the machine,' he said. *It was cold, like a dead thing.'

*A dead thing? What do you mean?'

*It was as if... as if there was nothing inside it,' whispered Maven. *I didn't get any sense of a pilot: no battle fury, no flair and certainly no triumph when it hit me.'

*So you think it was a robot?'

Maven shook his head. *No, it wasn't a robot. It reacted in ways that battle wetware can't, at least none I'm aware of.'

Both men knew that mono-tasked fighting robots were no match for skilled pilots, who could easily outfight machines with limited parameters of action.

*So what do you think it was?' asked Cronus.

Maven shrugged. *It wasn't a robot,' he sighed. *But then its fire patterns were so... textbook, like a rookie pilot on his first mission. I think that's the only reason I was able to get away without it taking me down. It was as if it had all the skills to destroy me, it just didn't know how to use them properly.'

*Then what are you going to do about it?'

*I'm going to hunt it down and kill it,' said Maven.

IN THE DARKEST vaulted chambers beneath Olympus Mons, three figures made their way down a cloistered pa.s.sageway and through dust that had not been disturbed for two centuries. Tunnels and pa.s.sages branched off into darkness, hewn into the bedrock of Mars thousands of years ago, but the three figures followed an unerring path through the maze as though pulled by an invisible cord or guided by an inaudible signal.

As he made his way through the shadowed tunnels, Kelbor-Hal surprised himself by detecting elevated adrenal levels and increased production of interleukins that in an unaugmented human would indicate excitement.

The automaton followed behind him, oblivious to the momentous role its master was about to play in the future history of Mars. The Fabricator General turned his hooded head to face Regulus, the adept moving with a loping mechanical grace as they delved into the depths of the planet and towards their destiny: The Vaults of Moravec.

Secrets that could not even be imagined awaited within that forgotten repository a a wealth of knowledge that had lain untapped and unexamined for a millennium. Such a waste of resource. Such a crime to disavow the legacy of the past.

A gaggle of floating servo-skulls accompanied them, swaying lumen globes held in pincer callipers hanging from their jaws.

Dust billowed in their wake and the metallic ring of their footsteps echoed from the dry, flaking walls as they travelled ever onwards. Regulus turned another corner, taking them through an echoing chamber with numerous tunnels branching off into the unknown.

Without pause, Regulus chose the seventh tunnel along the western wall and led them onwards, past dusty tombs, empty cells and bone-stacked alcoves of unknown worthies who had died and been placed in empty reliquaries in ages past.

They pa.s.sed open chambers piled high with dust-covered books, forgotten volumes of lore and chained bookcases of ledgers, records and the personal logs of long-dead adepts. Kelbor-Hal saw open caverns with giant machines, seized solid with rust or so corroded as to be unrecognisable.

This was the legacy of leaving technology untapped, the only possible outcome of the Emperor's decree that the Vault of Moravec remain unopened. With each sight, he grew more and more convinced that this path was the right one, that this gift of Horus Lupercal was one that should be accepted.

Kelbor-Hal's positioning matrix informed him that he was precisely nine hundred and thirty-five metres beneath the surface of Mars. He traced their route on a glowing map projected before him and recorded every step of the journey on a memory coil buried deep in his lumbar region.

It galled the Fabricator General that he needed Regulus to guide him through the maze, for he had travelled this way once before and should have been able to retrieve the route from his internal records.

It had been two hundred years ago when Kelbor-Hal had last seen the vault of Moravec. Together with his golden-armoured Custodians, the Emperor had led the way into the dusty sepulchres beneath Olympus Mons. The Emperor followed the path through the maze of tunnels towards the lost vault, though how the ruler of Terra had known its location had never been satisfactorily explained.

Nor had the need that had driven him to find the vaults been expressed.

Kelbor-Hal had put aside such concerns, eagerly antic.i.p.ating studying the unknown technologies that lay within the hidden catacombs beneath Olympus Mons.

When the vault was located, however, the Emperor simply stood before it without opening it. He had placed his hand on the sealed entrance to the vault with his eyes closed, and stood as immobile as a statue for sixteen point one five minutes before turning and leading his warriors back to the surface, despite Kelbor-Hal's protests.

It had been forbidden to store any record of the path to Moravec's vault, though Kelbor-Hal had, of course, secretly activated his cartographic memory buffers. However, upon returning to the surface, he had found them to be empty of any record of the journey. As though it had never happened.