He had reached twenty in his counting and his senses, alerted by training and instinct, told him there was an opening not too far above. But the darkness remained so thick it fell in tangible folds about his sweating body. Ross almost cried out as fingers clamped about his wrist when he reached for a new hold. Then urged by that grasp, he was up and out, sprawling into a vertical passage. Far ahead was a gray of faint light.

Ross choked and then sneezed as dust puffed up from between his scrabbling hands. The hold which had been on his wrist shifted to his shoulder, and with a surprising strength Loketh hauled the Terran to his feet.

The passage in which they stood was a slit extending in height well above their heads, but narrow, not much wider than Ross's shoulders. Whether it was a natural fault or had been cut he could not tell.

Loketh was ahead again, his rocking limp making the outline of his body a jerky up-and-down shadow. Again his speed and agility amazed the Terran. Loketh might be lame, but he had learned to adapt to his handicap very well.

The light increased and Ross marked slits in the walls to his right, no wider than the breadth of his two fingers. He peered out of one and was looking into empty air while below he heard the murmur of the sea. This way must run in the cliff face above the beach.

A click of impatient whisper drew him on to join Loketh. Here was a flight of stairs, narrow of tread and very steep. Loketh turned back and side against these to climb, his outspread hand flattened on the stone as if it possessed adhesive qualities to steady him. For the first time his twisted leg was a disadvantage.

Ross counted again—ten, fifteen of those steps, bringing them once more into darkness. Then they emerged from a well-like opening into a circular room. A sudden and dazzling flare of light made the Terran shade his eyes. Loketh set a pallid but glowing cone on a wall shelf, and the Terran discovered that the burst of light was only relative to the dark of the passage; indeed it was very weak illumination.

The Hawaikan braced his body against the far wall. The strain of his effort, whatever its purpose, was easy to read in the contorted line of his shoulders. Then the wall slid under Loketh's urging, a slow move as if the weight of the slab he strove to handle was almost too great for his slender arms, or else the need for caution was intensified here.

They now fronted a narrow opening, and the light of the cone shone only a few feet into the space. Loketh beckoned to Ross and they went on. Here the left wall was cut in many places emitting patches of light in a way which bore no resemblance to conventional windows. It was like walking behind a pierced screen which followed no logical pattern in the cutaway portions. Ross gazed out and gasped.

He was standing above the center core of the castle, and the life below and beyond drew his attention. He had seen drawings reproducing the life of a feudal castle. This resembled them and yet, as Ross studied the scene closer, the differences between the Terran past and this became more distinct.