The sight of him, vulnerable and lovable and harmless as a baby, was like a cold shower, clearing my head and bringing my thoughts into focus. I had to get Schmidt out of this. I had to get myself out too. I’d been a fool to consent to such a dangerous scheme – even if I hadn’t realized how dangerous it was going to be – and an even bigger fool to go on with it after I spotted John. I had done the job I had agreed to do, and my mysterious employers hadn’t kept their part of the bargain. They had let Schmidt get away. The hell with the Cairo Museum. I wouldn’t have traded a square inch of Schmidt’s bald scalp for the entire contents of the museum. The hell with security, too. I didn’t have to flap around like a wounded duck until somebody condescended to contact me – or until somebody else drowned me in my bathtub and threw me overboard. As soon as we reached Luxor I’d call Karl Feder and hand in my resignation. I’d have done it that minute if it had been possible to make a direct call. I didn’t trust anybody anymore; and that included the radio operator.

It was amazing how much better I felt once I’d made that decision. I could even enjoy the scenery. The cliffs of the high desert bounded the river on either side; even in bright sunlight they were a pale, ethereal pinky-yellow. At some places they rose sheer from the water’s edge; elsewhere they fell back, leaving a narrow strip of cultivable land. Little clusters of brown mud-brick houses were framed by green crops and palm trees. Birds flapped and swooped and beds of blue water hyacinths glided past, floating flowery islands in the stream.

I waved back at a group of children gathered along the bank, but my mind kept wandering. The greatest difficulty would be to talk Schmidt into cutting the trip short. I toyed with wild ideas – a fake telegram announcing that the museurn was on fire, or that a family member had fallen ill? No, that wouldn’t work. He’d telephone and discover the truth. Anyhow, it would be cruel to scare him.

We were to be in Luxor for four days. There wasn’t a prayer for getting Schmidt away until after he’d seen the famous tomb. I was rather keen on seeing it myself. Maybe, I thought hopefully, the cops were waiting on the quay at Luxor to round up the bad guys. Maybe John would call the whole thing off. Maybe Schmidt would get sick. A lot of tourists get sick. Maybe I’d get sick. Maybe I could pretend to be sick and insist that Schmidt take me home to Munich . . .

Maybe the mummy of Tutankhamon would rise up out of its coffin and blast the villains with a supernatural curse.

‘Oh, hell,’ I muttered.