‘I miss you.’ But as she looked up again the world lurched, a new layer of ice breaking, and somehow the room was a different room and she was on her knees beside a bed.

‘Nona?’ Abbess Glass lay in the bed, grey-faced, the comfortable weight wasted from her, leaving skin on bones. ‘Don’t cry, child.’

Nona snapped her head up, looking wildly around. The abbess’s bedroom in the big house. This was where she had died. This was how she died. Taken by disease, something that ate her from within and that neither Sister Rose nor Sister Apple could touch with all their pills and potions.

‘I don’t understand …’

‘Meaning is overrated, Nona.’ A cough convulsed the abbess for a moment, rattling in her chest. She had said exactly that, meaning is overrated, Nona remembered it, but not the question she had asked to prompt it. ‘There might not be a meaning to the world, or in it, but that does not mean that what we do has no meaning.’ Glass fell silent and for the longest minute Nona thought she would not speak again. When she did it was weak, faltering. ‘The Ancestor’s tree is something humanity planted and that we have watered with our deeds, our cares, with each act of love, even with our cruelty. Cling to it, Nona. Cling …’ And then she did stop, as Nona remembered, and the gleam had gone from her eyes.

Nona stood, an old sob shuddering through her. Sister Rose had been sleeping in the chair by the window when the abbess died, the sleep that crept in behind too many nights without rest. She had woken at Nona’s sob and sucked in a huge breath of her own. Now though, the chair lay empty and at the door it was Sister Pan who stood, her eyes bright and wet.

The old nun spoke, her voice strangely distant. ‘You’re getting further from the door, Nona.’

‘What?’

Sister Pan turned towards the window. Out beyond the rooftops of the refectory Path Tower rose like the line of darkness offered by a door beginning to open, or almost closed.

Nona frowned, torn between confusion and grief. She knew this for a memory of that awful day but it seemed more real than all those days that had queued between her and it. Glass had been taken by a foe Nona couldn’t stand against and the heart of Sweet Mercy had broken. She had thought when the shipheart was stolen and the convent left cold, its magic gone, that no greater blow could be struck against it. But the abbess had always been the true heart of Sweet Mercy and the emptiness she left behind was more profound than any Nona had known.

‘You’re getting further from the door.’ Sister Pan stood in the doorway but her single hand pointed at Path Tower. And in an instant the tower raced into the distance, becoming tiny, almost lost to sight. The room had gone, Abbess Glass and Sister Pan with it, and instead Nona stood in sunshine gazing out across a formal garden. She staggered, seized by vertigo, but prevented herself from falling.

She took a step forward, focused on a ficus tree in full bloom. The sound of a heavy blow hitting flesh arrested her. A second blow and an agonized cry turned her around.

Standing before the grand colonnade of his mansion High Priest Jacob swung his staff again. The wood thunked into Four-Foot’s side, a dull sound like a hammer hitting meat, and the mule grunted his pain.

‘No!’ The horror of the moment pinned Nona to the spot. Another blow descended and her flaw-blades shimmered into being around both hands. ‘No!’

Nona tensed as the high priest raised his staff, Four-Foot snorting bloody foam about his muzzle. She knew it was memory or dream but it seemed more real than her life, more solid, more important. Losses like Hessa and Abbess Glass, horrors like Four-Foot’s death, were nails struck into her life, pinning those moments to her forever, the punctuation of sorrow. She could no more tear herself from the scene before her than rip the skin from her body.

Markus, impossibly young, struggled at the limit of his strength to escape the grip of the high priest’s guard, wild in his passion. Giljohn stood at the cart, held by bonds of the sort that no child can see, the kind made of debt and of a bitter understanding of the world’s truths, the kind that tear at a life as you struggle against them and leave wounds that won’t heal.

Nona thanked the Ancestor that here in this strange dream the chains of duty and service had no purchase on her. Every muscle gathered itself as she prepared to leap at High Priest Jacob, ready to rend him into pieces.

It was raining that day. The heavens wept to see such cruelty.

At the back of Nona’s mind a small voice asked why it wasn’t raining.

Her leap never happened. Unbalanced, she fell to her knees, hands upon the dry stones of the path. It had been raining. It had. The water had run from Giljohn’s empty socket like the tears he should have shed. Nona looked up. She knew it to be memory. She knew there was nothing she could do for the mule straining against his rope, or Markus twisting in the grasp of Jacob’s guard. Even so, her mind clamoured for revenge, for the joy of bloody retribution. She stood, blades ready, intent on attack.

Some distant glint caught her eye. Over the wall of the garden. Over the roofs of nearby mansions, out across the five miles of farmland to the Rock of Faith. Her gaze drawn to the tiny bumps that at this distance were all the Convent of Sweet Mercy had to offer. Again the glint. The sun reflecting on a window, perhaps. A stained-glass window high in Path Tower? Something told her she needed to be there. A path seemed to stretch out before her in that direction.

You’re getting further from the door.

Gritting her jaw against the sound of blows raining down on Four-Foot, Nona ran. She refused to look away from the Rock and from the convent’s faint outline. She climbed the wall with a great leap and a lunge.

As Nona dropped into the next garden the convent vanished behind the chimneys of the neighbouring mansion. She made to rise but the wall’s shadow deepened into night, miring her like the thickest mud. ‘No!’ She struggled, desperate to return to the convent, but the darkness took her into some other place and a night filled with screaming and with fire.

Nona stood between two dark buildings. She looked slowly around, less worried by any danger than by what new tragedy might unfold, by what black milestone of her life this nightmare had brought her to.

Across an open space in front of her another building burned, the flames so bright that even the dying focus of the moon seemed pale. And although the night gave her nothing but angles and the ferocity of fire, Nona knew exactly where she stood. To her right, the home of James and Martha Baker. To her left, the stone walls of Grey Stephen’s house, he who had fought the Pelarthi in his youth. Rellam Village burned around her. The shapes moving across the background of blazing huts were those of children she had grown up with, of their parents, and of the soldiers the emperor’s sister had sent to cut them down.

Nona knew it for illusion or forgery or memory or all three woven together. Somehow she had fallen into a trap. Perhaps it had happened when she touched the Path. Sister Pan had endless stories of the dire ends to which it could lead the unwary, and used them regularly to scare any quantal novice in her care. Nona had to get back to Path Tower but the chance was gone and every shift of scene took her further from the convent, putting mile upon mile in her way and allowing no time to cross them. Whatever had gone wrong it must have happened when she had tried to walk through the wall to the Third Room. She had wandered into some realm of nightmare manufactured out of her past.