“Oh half-Dane who is not of the Half-Danes,” it said. “Do not listen to the warrior, the brave one. When trouble comes, do not rise to fight. Seek the ground. Seek the ground.”

Shef woke with a start, the smell of burning in his nostrils. For several seconds, half-drugged with fatigue, his mind circled around that: strange smell, something acrid, like tar—what could be burning tar? Then there was a confusion of movement all around him, a foot stamping on his guts jerked him into full wakefulness. The tent was abroil with men scrambling for breeches, boots, weapons, all in full darkness; there was a glare of fire on one side of the tent. Shef realized suddenly that there was a continuous roar in the background. Voices shouting, timber crackling, and over it all a deafening metallic clanging, the impact of blade on blade and blade on shield. The noise of full-scale battle.

The men in the tent were shouting, crowding past each other. Voices outside shouting, yelling in English, voices suddenly only yards away. Shef understood suddenly, the mighty voice still ringing in his ears. He hurled himself back to the ground again, fighting his way to the middle of the floor, away from the walls. As he did so the whole side of the tent caved in and through it there flashed a spear-blade. The young man who had guided him turned half toward it, his feet still trapped in folds of blanket, met the spear full in the chest. Shef grabbed the falling body and pulled it on top of him, feeling for the second time in a dozen hours the convulsive leap and start of a heart bursting.

As he did so, the whole tent collapsed and a wave of trampling feet ran over it, spears stabbing down into the trapped pile of struggling men. The body in his arms jerked again and again; in the darkness inches away there came screams of pain and fear; a blade plunged into the dirt, scraping against Shef’s sprawling knee. Then suddenly the feet were gone, a rush of bodies and voices swarmed past in the lane outside, a new hubbub of clanging and shrieking broke out ten yards toward the center of the camp.

Shef knew what had happened. The English king had taken the Vikings’ dare, had attacked their camp in the night, and by some miracle of organization and his enemies’ overconfidence, had broken through or over the stockade, driving for the ships and the tents of the leaders, killing as many trapped in their blankets as they could. The English were pouring on, driving toward the center of the river-line. Shef seized his breeches, his boots and his sword-belt and wriggled past the corpses of his temporary fellows into the open. Pulled the gear on, ran, keeping low to the ground.