The gladiator frowned. ‘It was clear enough to us. He said we weren’t to die. He gave his word. You heard it from his own lips. The Emperor’s word is law. There was a rumour going through the pens last night that the spectacle was off. Looks like it was true after all.’

‘He meant nothing of the sort, you fool! Now get to your ships!’

The gladiator turned to look at his nearest supporters and there was a muted exchange before he turned back to Naricissus and folded his arms. ‘We are pardoned men. The Emperor said as much. We demand to be set free at once.’

‘You demand?’ Narcissus choked. ‘How dare you, slave!’ The imperial secretary leant over the rail and shouted down to Tigellinus. ‘Centurion, kill that man, and any others who refuse to obey their orders.’

There was a brief pause and the air filled with tension as the gladiators and the other fighters reached for the handles of their swords. Centurion Tigellinus stepped in front of his line of men and looked up at Narcissus. ‘Sir?’

Narcissus stabbed a finger at him. ‘Do as you are ordered, or you’ll share his fate. Do it!’

Tigellinus stepped back into line, raised his shield and drew his sword. He sucked in a nervous breath and called out the order. ‘Sixth Century! Advance javelins!’

There was a loud stamp as the guardsmen planted one foot forward and then lowered the tips of their javelins at an angle towards the gladiators. Cato looked over the men opposite and calculated that there must be at least eighty of them, more or less even odds if the situation got out of hand. Beside him Macro fixed his stare on their leader and growled, ‘I had hoped never to fight slaves again. Gladiators least of all.’

‘A sestertius to a denarius that this lot were trained at the school in Rome,’ Cato muttered.

Macro glanced at him. The Great School was famed throughout the empire for the quality of the gladiators it turned out. Macro sucked in a deep breath. ‘Then we’re in trouble.’

Centurion Tigellinus must have shared their anxiety and turned to order one of the men to run to Tribune Burrus to request reinforcements. As the guardsman hurried off, Tigellinus raised his shield and turned it to face the gladiators. ‘Sixth Century, at the walk, advance!’

The line of Praetorians rippled forward, their ceremonial armour gleaming on top of their spotless white tunics. It had been some time since Cato and Macro had fought as part of a battle line, rather than in command of one, and Cato concentrated on keeping the length of his pace the same as the men on either side of him. Before him the leader of the gladiators stretched out a hand towards Narcissus.