Then he stopped and indicated for Irene to stay silent. In the far distance, barely audible despite the oppressive silence, she could just hear the sound of footsteps, carried to them by some trick of the architecture.

Guards. Or pursuers. Or both.

The next flight of stairs was brutal. It went up at an angle of perhaps sixty degrees, each step formed of pale slippery marble and high enough that Irene’s legs were aching before they were halfway up. Vale reached the top ahead of her and looked back - but no one was following them yet.

Irene pulled herself up to the top step. Then, gritting her teeth, she checked the pendant again. It was finally pointing somewhere concrete - at an enormous pillar to the right of their staircase. The pillar was vast, around ninety feet across, and as far as she could make out, it ran from the floor to the ceiling of the prison. Bridges protruded from it like spurs at different heights, and it was ornamented with jutting pennants sporting incomprehensible grey-on-grey designs.

But when they reached it, there weren’t even any obvious windows or grilles penetrating its interior. Irene walked around it, holding the pendant out hopefully, but while it indicated the pillar from every direction, it didn’t favour any particular place to start.

‘I could try commanding it,’ she said dubiously. ‘Telling it to open or something?’ It should work, but it might also open every other closed door within range of her voice. And she really didn’t want to meet the other prisoners here.

‘Let me examine it first,’ Vale snapped. He was all alertness now, tense and focused. He dropped to his knees in front of the column, leaning in till his nose was half an inch from the floor. There, he shuffled along on all fours, squinting at it mysteriously. After what seemed an age, he sprang to his feet, running his fingers up the seam between two of the blocks of stone. ‘I - yes, I believe I have it. Here.’ His voice was quiet, but as tense as a tuned violin string. He tapped at a particular point, at approximately eye level. ‘Winters, I believe there is a lock of some sort here, which would normally require a key, but under the circumstances …’

Irene nodded. She stepped next to him and leaned in until her lips were nearly touching the stone. ‘Lock, open,’ she murmured.

The seam in the column parted, and one of the blocks of stone swung inwards to reveal a short, dark passageway with an open space just visible beyond. It was entirely silent as they both crept inside.

The room at the centre of the pillar was cold and dim, lit by thin shards of light, which fell from slits in the walls high above. And there Kai was at last, chained against the far wall.

It would have been dignified to stand back and make a clever remark, but Irene was past dignity. She threw her arms around Kai, heedless of whether there might be any traps, and simply hugged him for a long moment.

He was in shirt and trousers that had seen better days, with his waistcoat hanging loose, and bruises showed livid on his face. A heavy dark collar circled his neck, with no visible lock, and thick shackles of iron bound his wrists to the wall. He looked at Irene and Vale as if they were an impossibility, as if they might not really be here at all.

Irene took a deep breath. Her eyes burned, and for a moment she thought she was going to sniffle embarrassingly. ‘I am very unimpressed with these lodgings,’ she said, pushing herself away from Kai with an effort. He was alive - something that she’d doubted in her darkest moments. She slipped the pendant over her head again. ‘Vale, do you think you can pick those locks?’

Seemingly lost for words, Vale clasped Kai’s shoulder for a moment - probably the closest he could come to Irene’s own hug - and then turned to examine the iron cuffs on Kai’s wrists. ‘If they were normal locks, I am certain that I could,’ he said. ‘Unfortunately, I suspect that they have Fae enchantments on them. Can you give me any information about them, Strongrock?’

Kai opened his mouth, then shut it, then opened it again. ‘Irene … Vale …’ His voice was rusty and dry. He looked between them desperately. ‘You are real, aren’t you? Not some sort of illusion? If I told you to pinch me, then would you pinch me?’

‘Yes,’ Irene said sharply. ‘I would. And I would pinch you so hard you’d wish you’d never asked. Kai, we are here - you aren’t hallucinating. We came.’ She hugged him again, trying to convince him. ‘And we’re probably running out of time. I’ll answer questions later. Do you know anything about those shackles?’

‘The collar’s enchanted, to keep me in this form and bind my powers,’ Kai said, then stopped, shaking his head. His voice shook. ‘I’m sorry. I still can’t … I don’t know about the others. Maybe if Irene uses the Language - how did you get here? We’re down in the far end of chaos.’

‘We are in the ancient prison of a particularly corrupt group of Fae, whose world bears a resemblance to a romantic seventeenth-century Venice,’ Vale said, stepping back and almost visibly withdrawing himself from emotional displays. ‘We arrived by train. Winters, you may deal with the chains. It’s impossible for me to open those locks.’

Irene wished she could be that short on detail when reporting to Coppelia. Of course reporting to Coppelia implied that she would get out of here alive … ‘Hmm,’ she said, bending in close and staring at the chains. ‘My abilities don’t allow me to sense anything specific about these. Vale, we may want to stand back. I’ll try the collar first.’