‘Police,’ I said. ‘I have a warrant to search Dr Kindermann’s office.’ This was true: I’d signed it myself. Only the nurse had been in the same holiday camp as Lange.

‘I don’t think you can just walk in there,’ she said. ‘I’ll have to — ’

‘Lady, a few weeks ago that little swastika you see on my identity card there was considered sufficient authority for German troops to march into the Sudetenland. So you can bet it will let me march into the good doctor’s underpants if I want it to.’ I shoved Lange forward again. ‘Come on, Reinhard, show me the way.’

Kindermann’s office was at the back of the clinic. As an apartment in town it would have been considered to be on the small side, but as a doctor’s private room it was just fine. There was a long, low couch, a nice walnut desk, a couple of big modern paintings of the kind that look like the inside of a monkey’s mind, and enough expensively bound books to explain the country’s shoe-leather shortage.

‘Take a seat where I can keep an eye on you, Reinhard,’ I told him. ‘And don’t make any sudden moves. I scare easily and then get violent to cover my embarrassment. What’s the word the rattle-doctors use for that?’ There was a large filing cabinet by the window. I opened it and started to leaf through Kindermann’s files. ‘Compensatory behaviour,’ I said. ‘That’s two words, but I guess that’s what it is all right.

‘You know, you wouldn’t believe some of the names that your friend Kindermann has treated. This filing cabinet reads like the guest list at a Reich Chancellery gala night. Wait a minute, this looks like your file.’ I picked it out and tossed it on to his lap. ‘Why don’t you see what he wrote about you, Reinhard? Perhaps it will explain how you got yourself in with these bastards in the first place.’

He stared at the unopened file.

‘It really is very simple,’ he said quietly. ‘As I explained to you earlier on, I became interested in the psychic sciences as a result of my friendship with Dr Kindermann.’ He raised his face to me challengingly.

‘I’ll tell you why you got yourself involved,’ I said, grinning back at him. ‘You were bored. With all your money you don’t know what to be at next. That’s the trouble with your kind, the kind that’s born into money. You never learn its value. They knew that, Reinhard, and they played you for Johann Simple.’

‘It won’t work, Gunther. You’re talking rubbish.’

‘Am I? You’ve read the file then. You’ll know that for sure.’

‘A patient ought never to see his doctor’s case notes. It would be unethical of me to even open this.’