We listened for a long time and heard nothing at all. After a while I said, 'I think…'

'Quiet!' snapped Byrne. In the distance was the unmistakable noise of a balky starter turning an engine over. It whined a few more times and then the quieter engine must have fired because the noise stopped. Byrne said, 'Maybe they're leaving.'

'Maybe it's a trick to get us in the open.' He nodded at that so we stayed there.

After perhaps ten minutes there was a shout and I looked up at the dune, careful to keep cover. Standing up there was Konti and he was shouting and waving. Byrne took a deep breath. 'I'll be goddamned! Let's go see.'

We climbed the dune and Konti started to jabber at Byrne with much gesticulation. He was very excited and understandably so; it had been an exciting fifteen minutes. He pointed down to the valley on the other side of the dune and he and Byrne walked down with me following because I wanted to know what was going on.

There were tyre tracks down there and someone had shed a lot of blood, perhaps a pint or more. Byrne squatted down and pointed to where a tyre had gone over blood-dampened sand. 'Kissack,' he said. 'That's the mark I put in his rear tyre.'

'What happened?'

'What happened is that you can thank God we picked up Konti yesterday. He probably saved our lives.'

'How?'

Byrne talked to Konti for a few minutes then said to me, 'He says there were three men here. From the description he gives they were Kissack, Bailly and another guy, probably an Arab. Kissack and the Arab were up top on the dune with Kissack doing the shooting. Bailly was standing here by the car. So Konti came around here and threw a knife at him.'

'A knife!' I said blankly. 'And that was what all the screaming was about?' I couldn't think why. A man with a knife in him didn't usually make that kind of row, but of course it would depend where the knife hit him. I looked around, then said, 'How did Konti get close enough to throw a knife? There's no cover.'

'You ain't seen the knife,' said Byrne. 'After it hit Bailly it buried itself in the sand. Konti picked it up before he called us.'

He said something to Konti and held out his hand. Konti fumbled about his person and produced the knife, which was like no knife I'd ever seen before. It was about eighteen inches long and made out of a single piece of flat steel an eighth of an inch thick. The handle was a foot long but the rest of it is hard to describe. It curved in a half-circle and two other blades projected at right-angles with hooks on the end. There seemed to be a multiplicity of cutting edges, each as sharp as a razor. It was very rusty.

'That's a mouzeri,' said Byrne. 'The Teda throwing knife. It's thrown horizontally from below waist level and it'll stop a horse going at full gallop. It's used for hunting addax and oryx but it'll also chop a man off at the ankles at sixty yards. Bailly didn't know what hit him, but Konti says it damn near took his left foot right off and badly injured his right ankle.'

I looked at the rusty blades. 'If he doesn't die of loss of blood it'll be by blood-poisoning,' I observed. What this thing had done to Bailly was enough to make anyone scream.

'I hope so,' said Byrne harshly. He took the queer-shaped knife and gave it back to Konti, who grinned cheerfully. 'Konti says it's the same knife he used to kill his enemy with in the Tibesti.' He looked down at the blood on the sand and shrugged. 'Let's go see what the damage is.'

The damage was bad. Three tyres shot to pieces and only two spares. But that wasn't the worst, because the petrol tank had a hole in it. We had refilled from the jerricans not long before the shooting and there wasn't nearly enough petrol to take us to Bilma even if we had good tyres.

I said, 'Well, we've got plenty water and food. All we have to do is to sit tight until Mokhtar comes along, then we can hitch a ride on a camel.'

'Yeah,' said Byrne. 'Good thinking – but for one thing. He ain't coming this way.'

CHAPTER TWENTY-TWO

Billson had still not got over his fit of the quivers. I couldn't say that I blamed him; being shot at takes different men in different ways, and Paul had not been the most stable man to begin with. And there was something else that Paul had to contend with which did not obtain under war conditions. He lived with the knowledge that he was being hunted personally, that someone malevolent was pursuing him with intent to kill. Every bullet that came our way had Paul's name engraved upon it And so he was in no shape to take an immediate part in the discussion. Konti, while being wise in desert ways, knew little about the Tenere; it was not his stamping ground. The same applied to me except the bit about desert ways, and so most of the decisions were made by Byrne.

After the flat statement that Mokhtar was not coming our way I merely said, 'Oh!' and waited for what he'd say next.

What he did say was: That djerba is going to come in useful. We're going to walk a piece.'

'How far?'

He said, 'I came this way because it's a short cut and okay for the truck. The camel trail is fifteen miles to the south.'

After leaving Fachi I would have sworn that Byrne had navigated from camel skeleton to camel skeleton but I had seen none in the last few miles. And he had just given the reason why. 'Fifteen miles,' I said, feeling relieved. 'That's not far.'

Byrne said, 'We'll need to take water – as much as we can carry.'

To walk fifteen miles?'

Byrne took me by the elbow and walked me out of Paul's hearing. He said, 'It'll take us the rest of today and all day tomorrow. You ever walked in soft sand?'

'Not far.' I looked up the valley. 'But it doesn't seem too difficult.'

He followed my glance. The camel trail to Bilma is successful because it follows the grain of the country. You can go up the long valleys between the dunes. We'll be walking against the grain; you'll be going up and down dunes until you're dizzy. It's fifteen miles across country plus five miles of climbing up and another five miles going down. And there are other things to keep in mind.'

'Such as?'

He shook his head. 'I'll tell you if it's necessary. No point in you worrying about what may not happen. Let me do the worrying.'

He only succeeded in making me uneasy.

The first thing we did was to fill the djerba with water from a jerrican, then Byrne looked me up and down. 'How much weight do you reckon you can carry?'

I remembered army route marches which were not so much for use in these mechanized days as to toughen the men. Officers were supposed to do better than the men. I picked a figure, then hastily revised it downwards as I thought of climbing interminably in soft sand. 'Forty pounds.'

Byrne shook his head. 'Too much. A jerri can half-full for you and Paul; that's about thirty pounds each. Konti can take his djerba; he's used to it.'

We took a full jerrican and split it between two, then made slings so the jerricans could be back-packed, taking care to put in plenty of padding to avoid chafe. Byrne made us take the djellabas. 'It gets cold at night.' I noted that the jerrican he picked to carry himself was full. That would be a killing load for a man on the wrong side of sixty if what he had said about our journey was true, but I said nothing about it. He knew what he was doing.

We then ate and stuffed what was left of the bread and cheese and a few scraps of meat into the breast pockets of our gandouras. 'Drink hearty,' advised Byrne. 'Water is better in you than out. Any camel knows that.'

When Byrne had spoken of water in the past he had referred to litres or gallons interchangeably, but his gallons were American. I estimated that we moved away carrying eight and a half imperial gallons in jerricans plus what was in the djerba which was difficult to estimate – say, nearly twelve gallons in all. It seemed a lot of water to take for a fifteen-mile hike and I wondered what possibilities were lurking in Byrne's mind.