It was indeed a globe, a round chamber floored, roofed, lined with crystals. They were fine as glass, and smooth as glass, but clearer than any glass I had ever seen, brilliant as diamonds. This, in fact, to my childish mind, was what they first seemed to be. I was in a globe lined with diamonds, a million burning diamonds, each face of each gem wincing with the light, shooting it to and fro, diamond to diamond and back again, with rainbows and rivers and bursting stars and a shape like a crimson dragon clawing up the wall, while below him a girl’s face swam faintly with closed eyes, and the light drove right into my body as if it would break me open.

I shut my eyes. When I opened them again I saw that the golden light had shrunk and was concentrated on one part of the wall no bigger than my head, and from this, empty of vision, rayed the broken, brilliant beams.

There was silence from the cave below. He had not stirred. I had not even heard the rustle of his clothes.

Then the light moved. The flashing disc began to slide, slowly, across the crystal wall. I was shaking. I huddled closer to the sharp stones, trying to escape it. There was nowhere to go. It advanced slowly round the curve. It touched my shoulder, my head, and I ducked, cringing. The shadow of my movement rushed across the globe, like a wind-eddy over a pool.

The light stopped, retreated, fixed glittering in its place. Then it went out. But the glow of the candle, strangely, remained; an ordinary steady yellow glow beyond the gap in the wall of my refuge.

“Come out.” The man’s voice, not loud, not raised with shouted orders like my grandfather’s, was clear and brief with all the mystery of command. It never occurred to me to disobey. I crept forward over the sharp crystals, and through the gap. Then I slowly pulled myself upright on the ledge, my back against the wall of the outer cave, the dagger ready in my right hand, and looked down.

CHAPTER SIX

HE stood between me and the candle, a hugely tall figure (or so it seemed to me) in a long robe of some brown homespun stuff. The candle made a nimbus of his hair, which seemed to be grey, and he was bearded. I could not see his expression, and his right hand was hidden in the folds of his robe.

I waited, poised warily.

He spoke again, in the same tone. “Put up your dagger and come down.”

“When I see your right hand,” I said.

He showed it, palm up. It was empty. He said gravely: “I am unarmed.”

“Then stand out of my way,” I said, and jumped. The cave was wide, and he was standing to one side of it. My leap carried me three or four paces down the cave, and I was past him and near the entrance before he could have moved more than a step. But in fact he never moved at all. As I reached the mouth of the cave and swept aside the hanging branches I heard him laughing.