Sean came back to them. "Are you ready to go on?"

Claudia glanced at her wristwatch. They had rested for less than half an hour. It was too short and she would have protested, but her father pushed himself to his feet.

"All set," he said, and she could see that even the short break had refreshed him.

They had been going only a few minutes when Riccardo said, quite cheerfully, "Those hamburgers Job has cooked smell just great. Makes me feel hungry."

"Those hamburgers are maize cakes," Sean chuckled. "Sorry to disappoint you. "You can't bullshit me." Riccardo chuckled with him. "I can smell the fried onions and beef."

"Papa." Claudia looked back over her shoulder and frowned sharply, and Riccardo stopped chuckling and looked distraught.

"There might be hallucinations," Doc Andrews had warned Claudia. "He may begin to see things or imagine various odors. I can't give you an exact progress of the disease, of course, and there may be periods of swift deterioration followed by longer periods of remission. Just remember, Claudia, that his fantasies will be very real to him, and episodes of hallucination can be followed by periods of complete lucidity."

That evening Sean would not stop to brew tea. "We have to try and make up the ground we've lost," he told them, so they ate the cold maize cakes and biltong-slivers of salted, air-dried venison-on the march.

"One large hamburger with fried onions and all the trimmings coming up, Capo," Sean teased him. Claudia glared at him, but Riccardo laughed uneasily and munched on the unappetizing fare as he walked.

They no longer had a spoor to follow, so Sean kept going lOng after night had fallen. The long, tortuous miles fell slowly behind them and the brilliant southern stars burned over their heads. It was almost midnight before they stopped and unrolled their sleeping bags.

Sean let them sleep until the dawn light was strong enough to make out the way ahead. The landscape had changed. During the night they had entered the region that was held in thrall by the great Zambezi. These were ancient flood plains that were inundated when the river broke its banks during the torrential rainy season.

They were dry now, although almost devoid of trees; a few long dead mo pane and acacia thorn trees drowned by the floods still held up twisted bare branches to the hazy blue sky, standing out on the empty plains like lonely sentinels.

As they moved out into the open, the dried mud had cracked in to brick lets beneath their feet, the edges curling up, and the clumps of swamp grass were brown and matted and dead from drought. When the breeze switched fitfully they could smell the swamps still out of view ahead, the odor of mud and rotting vegetation, The mirage shimmered across the plains, so there was no clear horizon; land and sky merged into each other like water. When they looked back the tree line crawled like a long black serpent below the milky sky, undulating and vibrating softly in the mirage, and the dust devils spun upon themselves twisting and swaying like belly dancers.

Out on the plain Sean felt exposed and vulnerable. There was just the scant chance of a Frelimo patrol plane passing this way to search for Renamo bands, and they were as obvious as fleas on a white sheet. He wanted to hurry but glanced back at Riccardo and knew that they would have to rest again soon.

Ahead of Sean, Matatu gave a cry that made his nerves jump. Sean knew what it meant and he ran forward, passing Claudia, and stopped beside Matatu.

"Well, all right!" He clapped Matatu's shoulder and went down on one knee to examine the earth.

"What is it?" Riccardo sounded alarmed, but Sean lifted his head and grinned at him.

"It's him. Tukutela. We've cut his spoor again just where Matatu predicted we would." And he touched the marks of the huge pads whose weight had crushed the brick lets of dried mud to talcum powder. The spoor was so clear that the difference between the bull's rounded front feet and the more oval hind feet was immediately apparent, and the forward edges of each footprint were nicked by his toenails.

"Still heading straight for the swamps." Sean stood and shaded his eyes against the glare as he followed the direction of the spoor.

Not far ahead another line of trees was drawn like a pencil along the horizon where a narrow curved finger of higher ground reached out across the plains.

"In a way we are fortunate," Sean remarked. "A few years ago there were so many herds of buffalo and game on these flats that Tukutela's spoor would have been wiped out in a few hours by their hooves. Now, since the Frelimo government converted them all to army rations, Tukutela is the only living thing for miles around."

"How far behind him are we?"

"We've made up a bit of ground." Sean lowered his hand from his eyes and turned to him. "But not enough, and if the uglies catch us out here in the open.... Luckily Tukutela's spoor is headed straight for the line of trees ahead. They will give us some cover."

He gestured to Matatu to take the spoor once again.

Now the expanse of the wide plain was dimpled with old anthills, mounds of clay thrown up by colonies of termites, some of them the size of a large cottage. Tukutela's spoor meandered between them. However, the line of growth was by now so close that they could make out individual trees. The finger of high ground formed a natural causeway from the edge of the forest across the wide plains to the beginning of the true swamps. There were ivory nut palms, bottle-stemmed palms, and low palms with their fan-shaped leaves, mixed with wild fig. On the highest ridge of the long causeway grew a few massive baobab, with trunks of elephantine gray bark.

With relief Sean followed the spoor of the old bull off the plain and into the trees of the isthmus. Here the elephant had stopped to dig out the juicy roots of an Bala palm and drop a pile of spongy yellow dung.