He had never been hit so hard in his life. Not even Bairoth Gild had managed to deliver such a blow. Even as consciousness slipped from him, he swung a look of astonished, unfeigned admiration on Keeper. Then he collapsed.

When he awoke, sunlight was streaming through the open doorway. He found himself lying in the stone chips. The air was filled with mortar dust, descending from above. Groaning with the pain of cracked ribs, Karsa slowly sat up. He could hear voices from up near the tower’s ceiling.

The bloodsword still hung from its straps on his back. The Teblor leaned against the stone leg bones of the skeleton as he climbed to his feet. Glancing up, he saw Torvald and Keeper, balanced in the wood framework directly beneath the ceiling, which had already been partly dismantled. The Daru looked down.

‘Karsa! I would invite you up but I suspect this scaffold wouldn’t manage your weight. We’ve made good progress in any case—’

Keeper interrupted with, ‘It’ll take his weight. I winched up the entire spine and that weighs a lot more than a lone Teblor. Get up here, lad, we’re ready to start on the walls.’

Karsa probed the vaguely fist-shaped bruise covering his lower ribs on his right side. It was painful to draw breath; he was unsure whether he would be able to climb, much less work. At the same time, he was reluctant to show weakness, particularly to that muscle-knotted Napan. Grimacing, he reached up to the nearest crossbeam.

The climb was agonizing, torturously slow. High above, the two lowlanders watched in silence. By the time Karsa reached the walkway beneath the ceiling, dragging himself alongside Keeper and Torvald, he was sheathed in sweat.

Keeper was staring at him. ‘Hood take me,’ he muttered, ‘I was surprised that you managed to stand at all, Teblor. I know that I broke ribs – damn’ – he lifted a splinted, bandage-swathed hand – ‘I broke bones of my own. It’s my temper, you see. It’s always been a problem. I don’t take insults too well. Best just sit there – we’ll manage.’

Karsa sneered. ‘I am of the Uryd tribe. Think you that a lowlander’s tap concerns me?’ He straightened. The ceiling had been a single slab of limestone, slightly projecting beyond the walls. Its removal had involved chiselling away the mortar at the joins, then simply sliding it to one side until it toppled, crashing into pieces down at the foot of the tower. The mortar around the wall’s large, rough blocks had been cut away down to the edge of the scaffold. Karsa set his shoulder against one side and pushed.

Both men snatched at the bloodsword’s straps as the Teblor toppled forward, a huge section of wall vanishing in front of him. A thunderous concussion from below shook the tower. There was a moment when it seemed that Karsa’s weight would drag all three of them over, then Keeper hooked a leg around a pole, grunting as the straps drew taut at the end of one arm. All hung in balance for a heartbeat, then the Napan slowly curled his arm, drawing Karsa back onto the platform.