‘Look, sir,’ I said. ‘If I’m going to row the boat I like to know if there are any leaks in it. That’s the difference between me and a regular bull. He doesn’t get to ask why. It’s the privilege of independence.’

Goering nodded. ‘I admire directness,’ he said. ‘I don’t just say that I’m going to do something, I do it and I do it properly. I don’t suppose there’s any point in hiring you unless I take you fully into my confidence. But you must understand, that imposes certain obligations on you, Herr Gunther. The price of betraying my trust is a high one.’

I didn’t doubt it for a minute. I got so little sleep these days, I didn’t think that losing some more on account of what I knew about Goering was going to make any difference. I couldn’t back off. Besides, there was likely to be some good money in it, and I try not to walk away from money unless I can possibly help it. He took another two of the little pink pills. He seemed to take them as often as I might have smoked a cigarette.

‘Sir, Rienacker will tell you that when he and I met in your apartment this afternoon, he asked me to tell him the name of the man I was working for, the man who owns the Rubens nude. I wouldn’t tell him. He threatened to beat it out of me. I still wouldn’t tell him.’

Rienacker leaned forwards. ‘That’s correct, Herr Prime Minister,’ he offered.

I continued with my pitch. ‘Every one of my clients gets the same deal. Discretion and confidentiality. I wouldn’t stay in business for very long if it was any other way.’