Chagatai came out with him, bare-chested and with only leggings to keep out the cold. There was a little starlight outside, but all was confusion and twice men grabbed them only to loosen a fierce grip when they were recognized.

Jochi saw his father come striding through the gers, his sword drawn, but held loosely in one hand.

"What is happening?" he said. His gaze fastened on Jochi, seeing his nervousness. The boy quailed under the flat stare, suddenly convinced that he had roused them all for nothing. Nonetheless, he brazened it out, refusing to be shamed in front of his father.

"There was a man in the ger. I woke and saw him as he opened the door to leave."

Genghis snorted, but before he could reply, fresh voices called through the night.

"Dead men here!"

Genghis lost interest in his sons, snarling aloud at the thought of an enemy loose in the camp.

"Find him!" he bellowed. He saw Kachiun coming at a run, a long blade in his hands. Khasar was not far behind and the three brothers stood together as they tried to make sense of the chaos.

"Tell me," Kachiun said as he came to a halt, his face still puffy from sleep.

Genghis shrugged, tense as a bowstring himself. "Jochi saw a man in his ger and there are dead guards. Someone is among us and I want him found."

"Genghis!"

He heard Borte call his name and turned to her. Out of the corner of his eye, he saw a dark shadow jerk into movement at the name.

Genghis spun and had a glimpse of the assassin leaping at him. He swung his sword and the man twisted aside, coming up from a tumbler's roll with knives in his hands. Genghis saw he would throw them before he could strike again, and he jumped at the dark figure, hammering him off his feet. A spark of pain touched his throat and then his brothers were stabbing at the assassin, jamming their blades in with such force that they sank into the ground beneath. The man did not cry out.

Genghis tried to scramble up, but the world swam lazily and his vision was strangely blurred.

"I'm cut…" he said dazedly, falling to his knees. He could hear the assassin's feet drumming on the ground as his brothers dropped their knees onto his chest, smashing his ribs. Genghis raised a hand to his neck and blinked at bloody fingers. The hand was terribly heavy and he slumped backwards onto the dry earth, still confused.

He saw the face of Jelme loom above him, moving slowly. Genghis stared upwards, unable to hear what he was saying. He saw Jelme reach down and yank cloth away from the wound in his neck. When he spoke again, the voice seemed to boom in Genghis's ears, almost drowning out the rushing whispers that deafened him. Jelme picked up the assassin's knife and cursed at the dark stain along the edge.

"The blade is poisoned," Jelme said, his own fear reflected in Kachiun and Khasar as they stood dumbstruck over their brother. The general did not speak again, instead lowering his mouth to Genghis's neck and sucking on the flow of blood. It was hot and bitter, making him gag as he spat it to one side. He did not stop, though Genghis's hands slapped weakly at his face whenever he pulled away, all strength gone.

Jelme could hear the younger sons of the khan wailing in distress as they saw their father lying close to death. Only Jochi and Chagatai were silent, watching as Jelme spat mouthfuls of blood until the front of his deel was covered in a dark slick.

Kokchu pressed through the crowd, pausing in shock as he saw his khan on the ground. He knelt at Jelme's side and ran his hands over Genghis's chest to feel the heart. It was racing at incredible speed, and for a time, Kokchu could not feel individual beats. Sweat had broken out all over the khan's body and his skin was flushed and hot to the touch.

Jelme sucked and spat and the blood flowed. The general could feel his own lips growing numb and he wondered if the poison would enter him. It did not matter. He thought of it as if he watched someone else. Blood dribbled from his lips as he gasped between each attempt.

"You must not take too much blood," Kokchu warned him, still with his bony hands on the chest. "Or he will be too weak to resist whatever poison remains." Jelme looked at him with glassy eyes before nodding and dipping his face to the searing skin once more. His own cheeks were flushed from contact with such heat, and he went on because to stop was to watch his khan die.

Kokchu felt the racing heart jolt and he feared it might stop under his hands. He needed the man who had won him such respect among the tribes, especially now that Temuge had abandoned him. Kokchu began to pray aloud, summoning the spirits by their ancient names. He called on the line of Genghis himself in a torrent of sound. Yesugei he called, even Bekter, the brother Genghis had killed. He needed them all to keep the khan from their realm. Kokchu could feel them gather as he chanted their names, pressing in on him so that his ears filled with whispers.

The heart jolted again and Genghis gasped aloud, his open eyes staring blindly. Kokchu felt the fluttering pulse settle, suddenly slowing as if a door had shut inside. He shivered in the cold, thinking that for a few moments, he had held the future of the tribes in his hands.

"Enough now, his heart is stronger," he said hoarsely. Jelme sat back. As he would have done with a gashed horse, the general made a paste of dust and spit and pressed it over the wound. Kokchu leaned over to observe the process, relieved to see the blood slow to a trickle. None of the major veins had been cut and he began to rejoice at the thought that Genghis might still live.

Once more Kokchu began to pray aloud, forcing the spirits of the dead to attend the man who had formed a nation. They would not want such a man with them while he took their people onwards. He knew it with a certainty that frightened him. The tribesmen watched in awe as Kokchu ran his hands over the supine form, gathering invisible strands as if his trailing fingers wrapped the khan in a web of spirits and faith.

Kokchu looked up at Borte as she stood red-eyed and swaying in shock. Hoelun too was there, desperately pale as she recalled the death of another khan many years before. Kokchu gestured for them to come closer.

"The spirits hold him here, for now," he told them, his eyes shining. "Yesugei is here, with his father Bartan. Bekter is here to hold the khan, his own brother." He shuddered in the cold, his eyes glazing for a moment. "Jelme has sucked out a great deal of poison, but the heart is fluttering; sometimes strong, sometimes weak. He needs rest. If he will eat, give him blood and milk for strength." Kokchu could no longer feel the deep coldness of the spirits clustering around him, but they had done their work. Genghis still lived. He called the man's brothers forward to carry him into the ger. Kachiun broke from his trance to order the camp searched for any other enemy still hiding. After that, he shouldered his brother's limp weight with Khasar and carried Genghis into Borte's ger.

Jelme was left kneeling, shaking his head in distress. His father, Arslan, reached him just as the young general vomited over the bloody ground.

"Help me with him," Arslan ordered, heaving his son to his feet. Jelme's face was slack and his full weight fell on his father before two warriors stepped in and draped his arms over their shoulders.

"What is wrong with him?" Arslan demanded of Kokchu. The shaman broke his gaze from the ger of Genghis. He used his fingers to open Jelme's eyes to their widest, staring into them. The pupils were large and dark and Kokchu swore softly.

"He may have swallowed the blood. Some of the poison has entered him also." Kokchu shoved a hand under Jelme's wet tunic, feeling his chest.

"It cannot be much and he is strong. Keep him awake if you can. Walk him. I will bring a draft of charcoal for him to drink."