The demon tilted a long-snouted head their way, regarding them with one silver eye. Then a figure astride its shoulder leaned into view. A youth, stained in old blood, his face a human version of the beast's.

'Aptorian,' Apsalar said in greeting.

The youth's fanged mouth opened and a rasping voice emerged. 'You seek Kalam Mekhar.'

'Yes,' Apsalar answered.

'He approaches the keep on the cliff—'

Fiddler started. 'Mock's Hold? Why?'

The rider cocked his head. 'He wishes to see the Empress?'

The sapper spun, eyes straining towards the towering bastion. A dark pennant flapped from the weathervane. 'Hood take us, she's here!'

'We shall guide you,' the rider said, offering a ghastly smile.

'Through Shadow – safe from the Claw.'

Apsalar smiled in return. 'Lead on, then.'

There was no slowing of pace as they rode towards the foot of wide stone stairs leading up the cliff face.

Kalam gripped Minala's arm. 'You'd better slow—'

'Just hold tight,' she growled. 'They aren't so steep.'

They aren't so steep? Fener's—

Muscles surged beneath them as the stallion plunged forward. Before the beast's hooves struck the stones, however, the world shifted into formless grey. The stallion screamed and reared back, but too late. The warren swallowed them.

Hooves skidded wildly beneath them. Kalam was thrown to one side, met a wall and was scraped off. A polished floor rose up to meet him, punched the air from his lungs. The crossbow flew from his hands and skittered away. Gasping, the assassin slowly rolled over.

They had arrived in a musty hallway, and the stallion was anything but pleased. The ceiling was high and arched, with an arm's reach to spare above the rearing animal. Somehow Minala had stayed in the saddle. She struggled to calm the stallion, and a moment later succeeded, leaning forward to rest one hand lightly just behind its flaring nostrils.

With a groan, Kalam climbed to his feet.

'Where are we?' Minala hissed, staring up and down the long, empty hall.

'If I'm correct, Mock's Hold,' the assassin muttered, retrieving the crossbow. 'The Empress knows we're coming – seems she's grown impatient...'

'If that's the case, Kalam, we're as good as dead.'

He was not inclined to disagree, but said nothing, stepping past the horse and eyeing the doors at the far end. 'I think we're in the Old Keep.'

'That explains the dust – even so, it smells like a stable.'

'Not surprising – half this building's been converted into just that. The Main Hall remains, though.' He nodded towards the doors. 'Through there.'

'No other approaches?'

He shook his head. 'None surviving. Her back door will be a warren, in any case.'

Minala grunted and climbed down from the saddle. 'Do you think she's been watching?'

'Magically? Maybe – you're wondering if she knows about you.' He hesitated, then handed her the crossbow. 'Let's pretend she doesn't. Hold back – I'll lead the stallion through.'

She nodded, cocking the weapon.

He looked at her. 'How in Hood's name did you get here?'

'The Imperial transport that left a day after Ragstopper. This horse wasn't out of place among Pormqual's breeders. We, too, were caught in that cursed storm, but the only real trouble came when we had to disembark from the bay. That's a swim I don't want to repeat. Ever.'

The assassin's eyes widened. 'Hood's breath, woman!' He looked away, then back. 'Why?'

She bared her teeth. 'Can you really be that dense, Kalam? In any case, was I wrong?'

There were some barriers the assassin had never expected to be breached. Their swift crumble left him breathless. 'All right,' he finally said, 'but I'll have you know, I'm anything but subtle.'

Her brows arched. 'You could have fooled me.'

Kalam faced the doors once again. He was armed with a single knife and had lost too much blood. Hardly what you'd call properly equipped to assassinate an Empress, but it will have to do . . . Without another word to Minala, he slipped forward, gathering the stallion's reins. The animal's hooves clopped loudly as they approached the old double doors.

He laid a hand against the wood. The dark-stained planks were sweating. There's sorcery on the other side. Powerful sorcery. He stepped back, met Minala's eyes where she stood ten paces back, and slowly shook his head.