And it was too late. Sim knew, judging the distances, that there was no turning back now.

His leg began to pain him a little. He favored it, slowing. A wind came up swiftly. A cold wind that bit into the skin. But it came from the cliffs behind them, helped rather than hindered them. An omen? he wondered. No.

For as the minutes went by it grew upon him how poorly he had estimated the distance. Their time was dwindling out, but they were still an impossible distance from the ship. He said nothing, but the impotent anger at the slow muscles in his legs welled up into bitterly hot tears in his eyes.

He knew that Lyte was thinking the same as himself. But she flew along like a white bird, seeming hardly to touch ground. He heard her breath go out and in her throat, like a clean, sharp knife in its sheathe.

Half the sky was dark. The first stars were peering through lengths of black cloud. Lightning jiggled a path along a rim just ahead of them. A full thunderstorm of violent rain and exploding electricity fell upon them.

They slipped and skidded on moss-smooth pebbles. Lyte fell, scrambled up again with a burning oath. Her body was scarred and dirty. The rain washed over her.

The rain came down and cried on Sim. It filled his eyes and ran in rivers down his spine and he wanted to cry with it.

Lyte fell and did not rise, sucking her breath, her breasts quivering.

He picked her up and held her. "Run, Lyte, please, run!"

"Leave me, Sim. Go ahead!" The rain filled her mouth. There was water everywhere. "It's no use. Go on without me."