'Don't you dare!' she screamed, struggling even harder as the soldier swung the picter by its strap and smashed it to pieces on the ground. Cassar was down on one knee, his face bloody and angry. He freed his pistol from its holster, but a knee connected widi his face and knocked him insensible, die pistol clattering to die ground beside him.

'Titus!' shouted Keeler, fighting like a wildcat and finally managing to free one arm. She reached back and clawed her nails down the face of the man who held her. He screamed and released his grip on her, and she scrambled on her knees to the fallen pistol.

'Get her!' someone shouted. 'Emperor loving bitch!'

She reached the pistol, hearing the thud of heavy impacts, and rolled onto her back. She held the gun out in front of her, ready to kill the next bastard that came near her.

Then she saw that she wouldn't have to kill anyone.

Three of die soldiers were down, one was running for his life through the campsite and the last was held in the iron grip of an Astartes warrior. The soldier's feet flailed-a metre off the ground as the Astartes held him round the neck with one hand.

'Five to one doesn't seem very sporting now does it?' asked the warrior, and Keeler saw that it was Captain Torgaddon, one of the Mournival. She remembered snapping some fine images of Torgaddon on the Vengeful Spirit and thinking that he was the handsomest of the Sons of Horus.

Torgaddon ripped the name and unit badge from the struggling soldier's uniform, before dropping him and saying, 'You'll be hearing from the Discipline Masters. Now get out of my sight before I kill you.'

Keeler dropped the pistol and scooted over to her picter, cursing as she saw that it and the images contained within it were probably ruined. She pawed through the remains and lifted out the memory coil. If she could get this into the edit engine she kept in her billet quickly enough then perhaps she could save some of the images.

Cassar groaned in pain and she felt a momentary pang of guilt that she'd gone for her smashed picter before him, but it soon passed.

'Are you Keeler?' asked Torgaddon as she slipped the memory coil into her robes.

She looked up, surprised that he knew her name, and said, 'Yes.'

'Good,' he said, offering his hand to help her to her feet.

'You want to tell me what that was all about?' he asked.

She hesitated, not wanting to tell an Astartes warrior the real reason for the assault. 'I don't think they liked the images I was taking,' she said.

'Everyone's a critic, eh?' chuckled Torgaddon, but she could see that he didn't believe her.

'Yeah, but I need to get back to the ship to recover them.'

'Well that's a happy coincidence,' said Torgaddon.

'What do you mean?'

'I've been asked to take you back to the Vengeful Spirit.'

'You have? Why?'

'Does it matter?' asked Torgaddon. 'You're coming back with me.'

'You can at least tell me who wants me back, can't you?'

'No, it's top secret.'

'Really?'

'No, not really, it's Kyril Sindermann.'

The idea of Sindermann sending an Astartes warrior to do his bidding seemed ludicrous to Keeler, and there could only be one reason why the venerable iterator wanted to speak to her. Ignace or Mersadie must have blabbed to him about her new faith, and she felt her anger grow at their unwillingness to understand her newfound truth.

'So the Astartes are at the beck and call of the iterators now?' she snapped.

'Hardly,' said Torgaddon. 'It's a favour to a friend and I think it might be in your own best interests to go back.'

'Why?'

'You ask a lot of questions, Miss Keeler,' said Torgaddon, 'and while that's a trait that probably stands you in good stead as a remembrancer, it might be best for you to be quiet and listen for a change.'

'Am I in trouble?'

Torgaddon stirred the smashed remnants of her picter with his boot and said, 'Let's just say that someone wants to give you some lessons in pictography.'

'The Emperor knew he would need the greatest warriors to lead his armies,' began Sejanus. 'To lead such warriors as the Astartes needed commanders like gods. Commanders who were virtually indestructible and could command superhuman warriors in the blink of an eye. They would be engineered to be leaders of men, mighty warlords whose martial prowess was only matched by the Emperor's, each with his own particular skills.'

'The primarchs.'

'Indeed. Only beings of such magnitude could even think of conquering the galaxy. Can you imagine the hubris and will required even to contemplate such an endeavour? What manner of man could even consider it? Who but a primarch could be trusted with such a monumental task? No man, not even the Emperor, could achieve such a god-like undertaking alone. Hence you were created.'

'To conquer the galaxy for humanity,' said Horus.

'No, not for humanity, for the Emperor,' said Sejanus. 'You already know in your heart what awaits you when the Great Crusade is over. You will become a gaoler who polices the Emperor's regime while he ascends to godhood and abandons you all. What sort of reward is that for someone who conquered the galaxy?'

'It is no reward at all,' snarled Horus, hammering his hand into the side of the silver tank before him. The metal buckled and a hairline crack split the toughened glass under his assault. He could hear a desperate drumming from inside, and a hiss of escaping gas whined from the frosted panel of the tank.

'Look around you, Horus,' said Sejanus. 'Do you think that the science of man alone could have created a being such as a primarch? If such technology existed, why not create a hundred Horuses, a thousand? No, a bargain was made that saw you emerge from its forging. I know, for the masters of the warp are as much your father as the Emperor.'

'No!' shouted Horus. 'I won't believe you. The primarchs are my brothers, the Emperor's sons created from his own flesh and blood and each a part of him.'

'Each a part of him, yes, but where did such power come from? He bargained with the gods of the warp for a measure of their power. That is what he invested in you, not his paltry human power.'

'The gods of the warp? What are you talking about, Sejanus?'

'The entities whose realm is being destroyed by the Emperor,' said Sejanus. 'Intelligences, xenos creatures, gods? Does it matter what terminology we use for them? They have such incredible power that they might as well be gods by your reckoning. They command the secrets of life and death and all that lies between. Experience, change, war and decay, they are all are part of the endless cycle of existence, and the gods of the warp hold dominion over them all. Their power flows through your veins and bestows incredible abilities upon you. The Emperor has long known of them and he came to them many centuries ago, offering friendship and devotion.'

'He would never do such a thing!' denied Horus.

'You underestimate his lust for power, my friend,' said Sejanus as they made their way back towards the steps that led down to the laboratory floor. 'The gods of the warp are powerful, but they do not understand this material universe, and the Emperor was able to betray them, stealing away their power for himself. In creating you, he passed on but a tiny measure of that power.'

Horus felt his breath come in short, painful bursts. He wanted to deny Sejanus's words, but part of him knew that this was no lie. Like any man, his future was uncertain, but his past had always been his own. His glories and life had been forged with his own two hands, but even now, they were being stripped away from him by the Emperor's treachery.

'So we are tainted,' whispered Horus. 'All of us.'

'Tainted, no,' said Sejanus, shaking his head. 'The power of the warp simply is. Used wisely and by a man of power it can be a weapon like no other. It can be mastered and it can be a powerful tool for one with the will to use it.'