‘That’s the medicine, I’m afraid.’ The man was about forty, rabbit-toothed, and with hair that he’d probably borrowed from an old mattress. He was terribly emaciated, with the kind of body that looked as though it belonged properly in a jar of formaldehyde, and there was a yellow star sewn to his prison jacket.

‘Medicine?’ There was a loud note of incredulity in my voice as I spoke.

‘Yes,’ drawled the Jew. ‘Sodium chloride.’ And then more briskly: ‘Common salt to you, my friend. I’ve covered your stripes with it.’

‘Good God,’ I said. ‘I’m not a fucking omelette.’

‘That may be so,’ he said, ‘but I am a fucking doctor. It stings like a condom full of nettles, I know, but it’s about the only thing I can prescribe that will stop the weals going septic.’ His voice was round and fruity, like a funny actor’s.

‘You’re lucky. You I can fix. I wish I could say the same for the rest of these poor bastards. Unfortunately there’s only so much that one can do with a dispensary that’s been stolen from a cookhouse.’

I looked up at the bunk above me, and the wrist which dangled over the edge. Never had there been an occasion when I had looked upon human deformity with such pleasure. It was a right wrist with a ganglion. The doctor lifted it out of my sight, and stood on my cot to check on its owner. Then he climbed down again, and looked at my bare arse.

‘You’ll do,’ he said.

I jerked my head upwards. ‘What’s wrong with him?’

‘Why, has he been giving you trouble?’

‘No, I just wondered.’

‘Tell me, have you had jaundice?’

‘Yes.’

‘Good,’ he said. ‘Don’t worry, you won’t catch it. Just don’t kiss him or try to fuck him. All the same, I’ll see that he’s moved onto another bunk, in case he pisses on you. Transmission is through excretory products.’

‘Transmission?’ I said. ‘Of what?’

‘Hepatitis. I’ll get them to put you on the top bunk and him on the bottom. You can give him some water if he gets thirsty.’

‘Sure,’ I said. ‘What’s his name?’

The doctor sighed wearily. ‘I really haven’t the faintest idea.’