'Ignace? No, I haven't spoken to him for some time,' replied Sindermann.

'It was Mersadie Oliton who came to see me. She tells me that you've become quite the agitator for this Lectitio Divinitatus cult.'

'It's not a cult.'

'No? Then what would you call it?'

She thought about it for a moment and then answered, 'A new faith.'

'A shrewd answer,' said Sindermann.

'If you'll indulge me, I'd like to know more about it.'

'You would? I thought you'd brought me back to try and teach me the error of my ways, to use your iterator's wiles to try and talk me out of my beliefs.'

'Not at all, my dear,' said Sindermann. 'You may think your tribute is paid in secret in the recesses of your heart, but it will out. We are a curious species when it comes to worship. The things that dominate our imagination determine our lives and our character. Therefore it behoves us to be careful what we worship, for what we are worshipping we are becoming.'

'And what do you think we worship?'

Sindermann looked furtively around the sub-deck and produced a sheet of paper that she recognised immediately as one of the Lectitio Divinitatus pamphlets. 'That's what I want you to help me with. I have read this several times and I must admit that I am intrigued by the things it posits. You see, ever since the… events beneath the Whisperheads, I… I haven't been sleeping too well and I thought to bury myself in my books. I thought that if I could understand what happened to us, then I could rationalise it.'

'And did you?'

He smiled, but she could see the weariness and despair behind the gesture. 'Honestly? No, not really, the more I read, the more I saw how far we'd come since the days of religious hectoring from an autocratic priesthood. By the same token, the more I read the more I realised there was a pattern emerging.'

'A pattern? What kind of pattern?'

'Look,' said Sindermann, coming round the table to sit next to her, and flattening out the pamphlet before her. 'Your Lectitio Divinitatus talks about how the Emperor has moved amongst us for thousands of year, yes?'

'Yes.'

'Well in the old texts, rubbish mostly - ancient histories and lurid tales of barbarism and bloodshed - I found some recurring themes. A being of golden light appears in several of the texts and, much as I hate to admit it, it sounds a lot like what this paper describes. I don't know what truth may lie in this avenue of investigation, but I would know more of it, Euphrati.' She didn't know what to say.

'Look,' he said, pulling the book around and turning it towards her. 'This book is written in a derivation of an ancient human language, but one I haven't seen before. I can make out certain passages, I think, but it's a very complex structure and without some of the root words to make the right grammatical connections, it's proving very difficult to translate.'

'What book is it?'

'I believe it to be the Book of Lorgar, although I haven't been able to speak with First Chaplain Erebus to verify that fact. If it is, it may be a copy given to the Warmaster by Lorgar himself.'

'So why does that make it so important?'

'Don't you remember the rumours about Lorgar?' asked Sindermann urgently. 'That he too worshipped the Emperor as a god? It's said that his Legion devastated world after world for not showing the proper devotion to the Emperor, and then raised up great monuments to him.'

'I remember the tales, yes, but that's all they are, surely?'

'Probably, but what if they aren't?' said Sindermann, his eyes alight with the possibility of uncovering such knowledge. 'What if a primarch, one of the Emperor's sons no less, was privy to something we as mere mortals are not yet ready for? If my work so far is correct, then this book talks about bringing forth the essence of god. I must know what that means!'

Despite herself, Euphrati felt her pulse race with this potential knowledge. Undeniable proof of the Emperor's divinity coming from Kyril Sindermann would raise the Lectitio Divinitatus far above its humble status and into the realm of a phenomenon that could spread from one side of the galaxy to the other.

Sindermann saw that realisation in her face and said, 'Miss Keeler, I have spent my entire adult life promulgating the truth of the Imperium and I am proud of the work I have done, but what if we are teaching the wrong message? If you are right and the Emperor is a god, then what we saw beneath the mountains of Sixty-Three Nineteen represents a danger more horrifying than we can possibly imagine. If it truly was a spirit of evil then we need a divine being such as the Emperor, more than ever. I know that words cannot move mountains, but they can move the multitude - we've proven that time and time again. People are more ready to fight and die for a word than for anything else. Words shape thought, stir feeling, and force action. They kill and revive, corrupt and cure. If being an iterator has taught me anything, it's that men of words - priests, prophets and intellectuals - have played a more decisive role in history than any military leaders or statesmen. If we can prove the existence of god, then I promise you the iterators will shout that truth from the highest towers of the land.'

Euphrati stared, open mouthed, as Kyril Sindermann turned her world upside down: this arch prophet of secular truth speaking of gods and faith? Looking into his eyes, she saw the wracking self-doubt and crisis of identity that he had undergone since she had last seen him, understanding how much of him had been lost these last few days, and how much had been gained.

'Let me see,' she said, and Sindermann pushed the book in front of her.

The writing was an angular cuneiform, running up and down the page rather than along it, and right away she could see that she would be no help in its translation, although elements of the script looked somehow familiar.

'I can't read it,' she said. 'What does it say?'

'Well, that's the problem, I can't tell exactly,' said Sindermann. 'I can make out the odd word, but it's difficult without die grammatical key.'

'I've seen this before,' she said, suddenly remembering why the writing looked familiar.

'I hardly think so, Euphrati,' said Sindermann. 'This book has been in the archive chamber for decades. I don't think anyone's read it since it was put there.'

'Don't patronise me, Sindermann, I've definitely seen this before,' she insisted.

'Where?'

Keeler reached into her pocket and gripped the memory coil of her smashed picter. She rose from her seat and said, 'Gather your notes and I'll meet you in the archive chamber in thirty minutes.'

'Where are you going?' asked Sindermann, gathering up the book.

'To get something you're going to want to see.'

Horus opened his eyes to see a sky thick with polluted clouds, the taste in the air chemical and stagnant.

It smelled familiar. It smelled of home.

He lay on an uneven plateau of dusty black powder in front of a long-exhausted mining tunnel, and felt the hollow ache of homesickness as he realised this was Cthonia.

The smog of the distant foundries and the relentless hammering of deep core mining filled the sky with particulate matter, and he felt an ache of loneliness for the simpler times he had spent here.

Horus looked around for Sejanus, but whatever the swirling vortex beneath Terra had been, it had evidently not swept up his old comrade in its fury.

His journey here had not been as silent and instant as his previous journeys through this strange and unknown realm. The powers that dwelled in the warp had shown him a glimpse of the future, and it was a desolate place indeed. Foul xeno breeds held sway over huge swathes of the galaxy and a pall of hopelessness gripped the sons of man.