Haupthändler’s were an impressively large suite of rooms on two levels, with arched doorways and a shiny wooden floor covered with thick Oriental rugs. Everything was neat and well-polished, so much so that the apartment seemed hardly lived in at all. In the bedroom were two large twin beds, a dressing-table, and a pouffe. The colour scheme was peach, jade-green and mushroom, with the first colour predominating. I didn’t like it. On each of the two beds was an open suitcase, and on the floor were empty carrier-bags from several large department stores including C & A, Grunfeld’s, Gerson’s and Tietz. I searched through the suitcases. The first one I looked in was a woman’s, and I was struck by the fact that everything in it was, or at least looked, brand-new. Some of the garments still had the price tags attached, and even the soles of the shoes were unworn. By contrast the other suitcase, which I presumed must belong to Haupthandler himself, contained nothing that was new, except for a few toiletries. There was no diamond necklace. But lying on the dressing-table was a wallet-sized folder containing two Deutsche Lufthansa air-tickets, for the Monday evening flight to Croydon, London. The tickets were returns, and booked in the name of Herr and Frau Teichmüller.

Before leaving Haupthandler’s apartment I called the Adlon Hotel. When Hermine answered I thanked her for helping me with the Princess Mushmi story. I couldn’t tell if Goering’s people in the Forschungsamt had tapped the telephone yet; there were no audible clicks, nor any extra resonance in Hermine’s voice. But I knew that if they really had put a tap on Haupthandler’s telephone, then I ought to see a transcript of my conversation with Hermine later on that day. It was as good a way as any of testing the true extent of the Prime Minister’s cooperation.

I left Haupthandler’s rooms and returned to the ground floor. The caretaker emerged from his office and took possession of his pass-key again.

‘You will say nothing of my being here to anyone. Otherwise it will go badly for you. Is that understood?’ He nodded silently. I saluted smartly, something Gestapo men never do, preferring as they do, to remain as inconspicuous as possible, but I was laying it on for the sake of effect.

‘Heil Hitler,’ I said.

‘Heil Hitler,’ repeated the caretaker, and, returning the salute, he managed to drop the keys.

‘We’ve got until Monday night to pull this one back,’ I said, sitting down at Inge’s table. I explained about the air-tickets and the two suitcases. ‘The funny thing was that the woman’s case was full of new things.’

‘Your Herr Haupthändler sounds like he knows how to look after a girl.’