“Yes!” The woman from Estcarp agreed to that. “And it is impossible that what Kolder holds to its core cannot be uncovered by our methods. They could cloak it, but the very blankness of that cloak would make it suspect! There is one test yet.” She plucked at the throat fastening of her robe and drew forth the dull jewel she had worn out of Estcarp. For a long moment she held it in her hands, gazing down into its heart, and then she slipped the chain from about her neck and held it out to Simon. “Take it!” she ordered.

Koris cried out and scrambled off the ledge. But Simon took it into his hand. At first touch the thing was as smooth and cold as any polished gem, then it began to warm, adding to that heat with every second. Yet the heat did not burn, it had no effect upon his flesh. Only the stone itself came to life; trails of opalescent fire crawled across its surface.

“I knew!” Her husky half-whisper filled the room. “No, not Kolder! Not Kolder; Kolder could not hold without harm, fire the Power and take no hurt! Welcome, brother in power!” Again she sketched a symbol in the air which glowed as brightly as the gem before it faded. Then she took the stone from his hold and restored it to its hiding place beneath her robe.

“He is a man. Shape changing could not work so, nor is it possible to befool us in the barracks where he has lived,” Koris spoke first. “And how does a man hold the Power?”

“He is a man out of our time and space. What chances in other worlds we cannot say. Now I will swear that he is not Kolder. So perhaps he is that which Kolder must face in the final battle. But now we must…”

Their preoccupation was sharply broken by the burr of a signal in the wall. Alert, Simon and Koris looked to the witch. Briant drew his gun. “The wall gate,” he said.

“Yet it is the right signal, though the wrong time. Answer it, but be prepared.”

He was already half out of the room. Koris and Simon sped after him to the garden door. As they reached outside, free from the deadening thickness of the walls of that unusual house, they heard a clamor from the town. Simon was plagued by a wisp of memory. There was a note in that far-off shouting which he had surely heard before. Koris looked startled.

“That is a mob! The snarl of a hunting mob.”

And Simon, remembering a red horror out of his own past, nodded briskly. He poised the dart gun to welcome whoever stood without the wall gate.