"It crossed," said Sipar. "It walked out as far as it could go and it must have swum."

"Are you sure? It might have waded out to make us think it crossed, then doubled back again."

He stared at the purple-green of the trees across the river. Inside that forest, it would be hellish going.

"We can look," said Sipar.

"Good. You go downstream. I'll go up."

An hour later, they were back. They had found no tracks. There seemed little doubt the Cytha had really crossed the river.

They stood side by side, looking at the forest.

"Mister, we have come far. You are brave to hunt the Cytha. You have no fear of death."

"The fear of death," Duncan said, "is entirely infantile. And it's beside the point as well. I do not intend to die."

They waded out into the stream. The bottom shelved gradually and they had to swim no more than a hundred yards or so.