‘Go away.’

‘I will not, until you tell me the rest.’

‘Go away.’

I thought desperately, and eagerness made me cruel. ‘I have a torch, Ebhoe. A powerful lamp. Do you want me to shine it in through the spy-hole?’

When he spoke again, there was terror in his voice. Emperor forgive me for my manipulation.

‘What more is there?’ he asked. ‘The Torment spread. We died by the thousand. I cannot help with your cause, though I pity those men on Genovingia.’

‘You never told me how it ended.’

‘Did you not read the reports?’

I glanced up and down the dark cell block to make sure we were still alone. ‘I read them. They were... sparse. They said Warmaster Getus incinerated the enemy from orbit, and ships were sent to relieve you at Pirody Polar. They expressed horror at the extent of the plague-loss. Fifty-nine thousand men dead. No count was made of the civilian losses. They said that by the time the relief ships arrived, the Torment had been expunged. Four hundred men were evacuated. Of them, only one hundred and ninety-one are still alive according to the records.’

‘There’s your answer then.’

‘No, colonel. That’s no answer! How was it expunged?’

‘We located the source of infection, cleansed it. That was how.’

‘How, Ebhoe? How, in the God-Emperor’s name?’

‘It was the height of the Torment. Thousands dead...’

VII

It was the height of the Torment. Thousands dead, corpses everywhere, pus and blood running in those damnably bright halls.

I went to Valis again, begging for news. He was in his infirmium, working still. Another batch of vaccines to try, he told me. The last six had failed, and had even seemed to aggravate the contagion.

The men were fighting themselves by then, killing each other in fear and loathing. I told Valis this, and he was silent, working at a flame burner on the steel workbench. He was a huge being, of course... Adeptus Astartes, a head and a half taller than me, wearing a cowled red robe over his Doom Eagles armour. He lifted specimen bottles from his narthecium, and held them up to the ever-present light.

I was tired, tired like you wouldn’t believe. I hadn’t slept in days. I put down the flamer I had been using for cleansing work, and sat on a stool.

‘Are we all going to perish?’ I asked the great Apothecary.

‘Dear, valiant Ebhoe,’ he said with a laugh. ‘You poor little man. Of course not. I will not allow it.’

He turned to face me, filling a long syringe from a stoppered bottle. I was in awe of him, even after the time we had spent together.

‘You are one of the lucky ones, Ebhoe. Clean so far. I’d hate to see you contract this pestilence. You have been a faithful ally to me through this dark time, helping to distribute my vaccines. I will mention you to your commanders.’