"Chris!"
Standing behind the green knight, she held up the cylinder, so he could see it. He nodded vaguely, continuing to dodge and back away. She saw he was tiring fast, losing ground, the green knight advancing on him.
Kate had no choice: she ran forward, leapt into the air, and landed on the green knight's back. He grunted in surprise at the weight. She clung to him, brought the canister around to the front of his helmet, and fired gas through the slit. The knight coughed and shivered. She squeezed again, and the knight began to stagger. She dropped back to the ground.
She said, "Do it!"
Chris was on one knee, gasping. The green knight was still on his feet, but weaving. Chris came slowly forward and stabbed the sword into the knight's side, between the armor plates. He gave a roar of fury and fell onto his back.
Chris was on him immediately, cutting the laces of his helmet, kicking it away with his foot. She glimpsed tangled hair, matted beard, and wild eyes as he swung the sword down, and severed the knight's head.
It didn't work.
The blade came down, crunched into bone, and stuck there, only partway through his neck. The knight was still alive, looking at Chris in fury, his mouth moving.
Chris tried to pull the sword out, but it was caught in the knight's throat. As he struggled, the knight's left hand came up and grabbed his shoulder. The knight was immensely strong - demonically strong - and pulled him down until his face was inches away. His eyes were bloodshot. His teeth were cracked and rotten. Lice crawled in his beard, among bits of discolored food. He stank of decay.
Chris was revolted. He felt his hot, reeking breath. Struggling, he managed to put his foot on the knight's face, and he stood up, forcing himself free of the grip. The sword came free in the same moment, and he lifted it to swing down.
But the knight's eyes rolled upward and his jaw went slack. He was already dead. Flies began to buzz over his face.
Chris collapsed, sitting on the wet ground, trying to catch his breath. Revulsion swept over him like a wave, and he started to shiver uncontrollably. He hugged himself, trying to stop it. His teeth were chattering.
Kate put her hand on his shoulder. She said, "My hero." He hardly heard her. He didn't say anything. But eventually he stopped shivering and got to his feet again.
"I was glad to see you," she said.
He nodded and smiled. "I took the easy way down."
Chris had managed to stop his slide in the mud. He had spent many difficult minutes working his way back up the slope, and then he took the other path down. It turned out to be an easy walk to the base of the waterfall, where he found Kate about to be beheaded.
"You know the rest," he said. He got to his feet, leaned on the sword. He looked up at the sky. It was starting to get dark. "How much time do you think is left?"
"I don't know. Four, five hours."
"Then we better get started."
The ceiling of the green chapel had fallen in at several places, and the interior was in ruins. There was a small altar, Gothic frames around broken windows, pools of stagnant water on the floor. It was hard to see that this chapel had once been a jewel, its doorways and arches elaborately carved. Now slimy mold dripped from the carvings, which were eroded beyond recognition.
A black snake slithered away as Chris went down spiral stairs to the crypts below ground. Kate followed more slowly. Here it was darker, the only light coming from cracks in the floor above. There was the constant sound of dripping water. In the center of the room they saw a single intact sarcophagus, carved of black stone, and the broken fragments of several others. The intact sarcophagus had a knight in armor carved on the lid. Kate peered at the knight's face, but the stone had been eroded by the omnipresent mold, and the features were gone.
"What was the key again?" Chris said. "Something about the giant's feet?"
"That's right, so many paces from the giant's feet. Or gigantic feet."
"From the giant's feet," Chris repeated. He pointed to the sarcophagus, where the feet of the carved knight were two rounded stumps. "Do you suppose it means these feet?"
Kate frowned. "Not exactly giant."
"No. . . ."
"Let's try it," she said. She stood at the foot of the sarcophagus, turned right, and went five paces. Then she turned left, and went four paces. She turned right again, and took three paces before she came up against the wall.
"Guess not," Chris said.
They both turned away and began to search in earnest. Almost immediately, Kate made an encouraging discovery: half a dozen torches, stacked in a corner, where they would stay dry. The torches were crudely made, but serviceable enough.
"The passage has to be here somewhere," she said. "It has to be."
Chris didn't answer. They searched in silence for the next half hour, wiping mold off the walls and floor, looking at the corroded carvings, trying to decide if one or another might represent a giant's feet.
Finally, Chris said, "Did the thing say the feet were inside the chapel, or at the chapel?"
"I don't know," Kate said. "Andre read it to me. He translated the text."
"Because maybe we should be looking outside."
"The torches were in here."
"True."
Chris turned, frustrated, looking.
"If Marcel made a key that took off from a landmark," Kate said, "he wouldn't use a coffin or sarcophagus, because that could be moved. He would use something fixed. Something on the walls."
"Or the floor."
"Yes, or the floor."
She was standing by the far wall, which had a little niche cut into the stone. At first she thought these were little altars, but they were too small, and she saw bits of wax; evidently, they had been made to hold a candle. She saw several of these candle niches in the walls of the crypt. The inner surfaces of this niche were beautifully carved, she noticed, with a symmetrical design of bird's wings going up each side. And the carving had not been touched, perhaps because the heat of the candles had suppressed the growth of mold.