There was a cabaret, of sorts: a chanteuse with orange hair, and a twangy voice like a Jew’s harp; and a skinny little comedian with joined-up eyebrows, who was about as risque as a wafer on an ice-cream sundae. There was less chance of the crowd at the Femina enjoying the acts than there was of it rebuilding the Reichstag: it laughed during the songs; and it sang during the comedian’s monologues; and it was no nearer the palm of anyone’s hand than if it had been a rabid dog.

Looking round the room I found there were so many false eyelashes flapping at me that I was beginning to feel a draught. Several tables away a fat woman rippled the fingers of a pudgy hand at me, and misinterpreting my sneer for a smile, she started to struggle out of her seat. I groaned.

‘Yessir?’ answered the waiter. I pulled a crumpled note out of my pocket and tossed it on to his tray. Without bothering to wait for my change I turned and fled.

There’s only one thing that unnerves me more than the company of an ugly woman in the evening, and that’s the company of the same ugly woman the following morning.

I got into the car and drove to Potsdamer Platz. It was a warm, dry evening, but the rumbling in the purple sky told me that the weather was about to change for the worse. I parked on Leipziger Platz in front of the Palast Hotel. Then I went inside and telephoned the Adlon.

I got through to Benita, who said that Hermine had left her a message, and that about half an hour after I had spoken to her a man had called asking about an Indian princess. It was all I needed to know.

I collected my raincoat and a flashlight from the car. Holding the flash under the raincoat I walked the fifty metres back to Potsdamer Platz, past the Berlin Tramway Company and the Ministry of Agriculture, towards Columbus Haus. There were lights on the fifth and seventh floors, but none on the eighth. I looked in through the heavy plate-glass doors. There was a security guard sitting at the desk reading a newspaper, and, further along the corridor, a woman who was going over the floor with an electric polisher. It started to rain as I turned the corner onto Hermann Goering Strasse, and made a left onto the narrow service alley that led to the underground car-park at the back of Columbus Haus.