"I'd cut his throat while he slept. You know nothing, Jon Snow." Ygritte twisted like an eel and wrenched away from him.

I know one thing. I know that you are wildling to the bone. It was easy to forget that sometimes, when they were laughing together, or kissing. But then one of them would say something, or do something, and he would suddenly be reminded of the wall between their worlds.

"A man can own a woman or a man can own a knife," Ygritte told him, "but no man can own both. Every little girl learns that from her mother." She raised her chin defiantly and gave her thick red hair a shake. "And men can't own the land no more'n they can own the sea or the sky. You kneelers think you do, but Mance is going t' show you different."

It was a fine brave boast, but it rang hollow. Jon glanced back to make certain the Magnar was not in earshot. Errok, Big Boil, and Hempen Dan were walking a few yards behind them, but paying no attention. Big Boil was complaining of his arse. "Ygritte," he said in a low voice, "Mance cannot win this war."

"He can!" she insisted. "You know nothing, Jon Snow. You have never seen the free folk fight!"

Wildlings fought like heroes or demons, depending on who you talked to, but it came down to the same thing in the end. They fight with reckless courage, every man out for glory. "I don't doubt that you're all very brave, but when it comes to battle, discipline beats valor every time. In the end Mance will fail as all the Kings-beyond-the-Wall have failed before him. And when he does, you'll die. All of you."

Ygritte had looked so angry he thought she was about to strike him. "All of us," she said. "You too. You're no crow now, Jon Snow. I swore you weren't, so you better not be." She pushed him back against the trunk of a tree and kissed him, full on the lips right there in the midst of the ragged column. Jon heard Grigg the Goat urging her on. Someone else laughed. He kissed her back despite all that. When they finally broke apart, Ygritte was flushed. "You're mine," she whispered. "Mine, as I'm yours. And if we die, we die. All men must die, Jon Snow. But first we'll live."

"Yes." His voice was thick. "First we'll live."

She grinned at that, showing Jon the crooked teeth that he had somehow come to love. Wildling to the bone, he thought again, with a sick sad feeling in the pit of his stomach. He flexed the fingers of his sword hand, and wondered what Ygritte would do if she knew his heart. Would she betray him if he sat her down and told her that he was still Ned Stark's son and a man of the Night's Watch? He hoped not, but he dare not take that risk. Too many lives depended on his somehow reaching Castle Black before the Magnar . . . assuming he found a chance to escape the wildlings.

They had descended the south face of the Wall at Greyguard, abandoned for two hundred years. A section of the huge stone steps had collapsed a century before, but even so the descent was a good deal easier than the climb. From there Styr marched them deep into the Gift, to avoid the Watch's customary patrols. Grigg the Goat led them past the few inhabited villages that remained in these lands. Aside from a few scattered roundtowers poking the sky like stone fingers, they saw no sign of man. Through cold wet hills and windy plains they marched, unwatched, unseen.

You must not balk, whatever is asked of you, the Halfhand had said. Ride with them, eat with them, fight with them, for as long as it takes. He'd ridden many leagues and walked for more, had shared their bread and salt, and Ygritte's blankets as well, but still they did not trust him. Day and night the Thenns watched him, alert for any signs of betrayal. He could not get away, and soon it would be too late.

Fight with them, Qhorin had said, before he surrendered his own life to Longclaw . . . but it had not come to that, till now. Once I shed a brother's blood I am lost. I cross the Wall for good then, and there is no crossing back.

After each day's march the Magnar summoned him to ask shrewd sharp questions about Castle Black, its garrison and defenses. Jon lied where he dared and feigned ignorance a few times, but Grigg the Goat and Errok listened as well, and they knew enough to make Jon careful. Too blatant a lie would betray him.

But the truth was terrible. Castle Black had no defenses, but for the Wall itself. It lacked even wooden palisades or earthen dikes. The "castle" was nothing more than a cluster of towers and keeps, two-thirds of them falling into ruin. As for the garrison, the Old Bear had taken two hundred on his ranging. Had any returned? Jon could not know. Perhaps four hundred remained at the castle, but most of those were builders or stewards, not rangers.

The Thenns were hardened warriors, and more disciplined than the common run of wildling; no doubt that was why Mance had chosen them. The defenders of Castle Black would include blind Maester Aemon and his half-blind steward Clydas, one-armed Donal Noye, drunken Septon Cellador, Deaf Dick Follard, Three-Finger Hobb the cook, old Ser Wynton Stout, as well as Halder and Toad and Pyp and Albett and the rest of the boys who'd trained with Jon. And commanding them would be red-faced Bowen Marsh, the plump Lord Steward who had been made castellan in Lord Mormont's absence. Dolorous Edd sometimes called Marsh "the Old Pomegranate," which fit him just as well as "the Old Bear" fit Mormont. "He's the man you want in front when the foes are in the field," Edd would say in his usual dour voice. "He'll count them right up for you. A regular demon for counting, that one."

If the Magnar takes Castle Black unawares, it will be red slaughter, boys butchered in their beds before they know they are under attack. Jon had to warn them, but how? He was never sent out to forage or hunt, nor allowed to stand a watch alone. And he feared for Ygritte as well. He could not take her, but if he left her, would the Magnar make her answer for his treachery? Two hearts that beat as one . . .

They shared the same sleeping skins every night, and he went to sleep with her head against his chest and her red hair tickling his chin. The smell of her had become a part of him. Her crooked teeth, the feel of her breast when he cupped it in his hand, the taste of her mouth . . . they were his joy and his despair. Many a night he lay with Ygritte warm beside him, wondering if his lord father had felt this confused about his mother, whoever she had been. Ygritte set the trap and Mance Rayder pushed me into it.

Every day he spent among the wildlings made what he had to do that much harder. He was going to have to find some way to betray these men, and when he did they would die. He did not want their friendship, any more than he wanted Ygritte's love. And yet . . . the Thenns spoke the Old Tongue and seldom talked to Jon at all, but it was different with Jarl's raiders, the men who'd climbed the Wall. Jon was coming to know them despite himself: gaunt, quiet Errok and gregarious Grigg the Goat, the boys Quort and Bodger, Hempen Dan the ropemaker. The worst of the lot was Del, a horsefaced youth near Jon's own age, who would talk dreamily of this wildling girl he meant to steal. "She's lucky, like your Ygritte. She's kissed by fire."

Jon had to bite his tongue. He didn't want to know about Del's girl or Bodger's mother, the place by the sea that Henk the Helm came from, how Grigg yearned to visit the green men on the Isle of Faces, or the time a moose had chased Toefinger up a tree. He didn't want to hear about the boil on Big Boil's arse, how much ale Stone Thumbs could drink, or how Quort's little brother had begged him not to go with Jarl. Quort could not have been older than fourteen, though he'd already stolen himself a wife and had a child on the way. "Might be he'll be born in some castle," the boy boasted. "Born in a castle like a lord!" He was very taken with the "castles" they'd seen, by which he meant watchtowers.

Jon wondered where Ghost was now. Had he gone to Castle Black, or was he was running with some wolfpack in the woods? He had no sense of the direwolf, not even in his dreams. It made him feel as if part of himself had been cut off. Even with Ygritte sleeping beside him, he felt alone. He did not want to die alone.

By that afternoon the trees had begun to thin, and they marched east over gently rolling plains. Grass rose waist high around them, and stands of wild wheat swayed gently when the wind came gusting, but for the most part the day was warm and bright. Toward sunset, however, clouds began to threaten in the west. They soon engulfed the orange sun, and Lenn foretold a bad storm coming. His mother was a woods witch, so all the raiders agreed he had a gift for foretelling the weather. "There's a village close," Grigg the Goat told the Magnar. "Two miles, three. We could shelter there." Styr agreed at once.

It was well past dark and the storm was raging by the time they reached the place. The village sat beside a lake, and had been so long abandoned that most of the houses had collapsed. Even the small timber inn that must once have been a welcome sight for travelers stood half-fallen and roofless. We will find scant shelter here, Jon thought gloomily. Whenever the lightning flashed he could see a stone roundtower rising from an island out in the lake, but without boats they had no way to reach it.

Errok and Del had crept ahead to scout the ruins, but Del was back almost at once. Styr halted the column and sent a dozen of his Thenns trotting forward, spears in hand. By then Jon had seen it too: the glimmer of a fire, reddening the chimney of the inn. We are not alone. Dread coiled inside him like a snake. He heard a horse neigh, and then shouts. Ride with them, eat with them, fight with them, Qhorin had said.

But the fighting was done. "There's only one of them," Errok said when he came back. "An old man with a horse."

The Magnar shouted commands in the Old Tongue and a score of his Thenns spread out to establish a perimeter around the village, whilst others went prowling through the houses to make certain no one else was hiding amongst the weeds and tumbled stones. The rest crowded into the roofless inn, jostling each other to get closer to the hearth. The broken branches the old man had been burning seemed to generate more smoke than heat, but any warmth was welcome on such a wild rainy night. Two of the Thenns had thrown the man to the ground and were going through his things. Another held his horse, while three more looted his saddlebags.

Jon walked away. A rotten apple squished beneath his heel. Styr will kill him. The Magnar had said as much at Greyguard; any kneelers they met were to be put to death at once, to make certain they could not raise the alarm. Ride with them, eat with them, fight with them. Did that mean he must stand mute and helpless while they slit an old man's throat?

Near the edge of the village, Jon came face-to-face with one of the guards Styr had posted. The Thenn growled something in the Old Tongue and pointed his spear back toward the inn. Get back where you belong, Jon guessed. But where is that?

He walked towards the water, and discovered an almost dry spot beneath the leaning daub-and-wattle wall of a tumbledown cottage that had mostly tumbled down. That was where Ygritte found him sitting, staring off across the rain-whipped lake. "I know this place," he told her when she sat beside him. "That tower . . . look at the top of it the next time the lightning flashes, and tell me what you see."

"Aye, if you like," she said, and then, "Some o' the Thenns are saying they heard noises out there. Shouting, they say."

"Thunder."

"They say shouting. Might be it's ghosts."