‘Really, Herr Gunther,’ said Schemm, affecting shock at my asking such an insensitive question.

‘We had our differences of opinion,’ said Six. ‘But what man can be expected sometimes not to agree with his son-in-law?’ He put down the poker. I kept quiet for a minute. Eventually he said: ‘Now then, with regard to the conduct of your investigations, I would prefer it if you would confine your activities specifically to searching for the jewels. I don’t care for the idea of you snooping around in the affairs of my family. I’ll pay your fees, whatever they are — ’

‘Seventy marks a day, plus expenses,’ I lied, hoping that Schemm hadn’t checked it out.

‘What is more, the Germania Life Assurance and Germania Insurance Companies will pay you a recovery fee of five per cent. Is that agreeable to you, Herr Gunther?’ Mentally I calculated the figure to be 37,500. With that sort of money I was set. I found myself nodding, although I didn’t care for the ground rules he was laying down: but then for nearly 40,000 it was his game.

‘But I warn you, I’m not a patient man,’ he said. ‘I want results, and I want them quickly. I have written out a cheque for your immediate requirements.’ He nodded to his stooge, who handed me a cheque. It was for 1,000 marks and made out to cash at the Privat Kommerz Bank. Schemm dug into his briefcase again and handed me a letter on the Germania Life Assurance Company’s notepaper.

‘This states that you have been retained by our company to investigate the fire, pending a claim by the estate. The house was insured by us. If you have any problems you should contact me. On no account are you to bother Herr Six, or to mention his name. Here is a file containing any background information you may need.’

‘You seem to have thought of everything,’ I said pointedly.

Six stood up, followed by Schemm, and then, stiffly, by me. ‘When will you start your investigations?’ he said.

‘First thing in the morning.’

‘Excellent.’ He clapped me on the shoulder. ‘Ulrich will drive you home.’ Then he walked over to his desk, sat down in his chair and settled down to go through some papers. He didn’t pay me any more attention.