The dark-robed figure approached Mancinus and took out a knife. He cut into the neckline of the tunic and then ripped it down as far as the tribune’s groin. Then he made another cut until the cloth was rent top to bottom, exposing the front of the Roman officer.

‘Sweet Mithras . . .’ Petillius muttered. ‘They’re going to gut the poor bastard.’

Macro quickly turned to him. ‘Get Maridius up here, fast as you can!’

Petillius ran back to the ladder and descended two rungs at a time. A moment later Macro heard his boots pounding towards the barracks where the Catuvellaunian prince was imprisoned. In front of the fort the Druid scored a shallow cut across Mancinus’s chest. The tribune strained to free himself from the grip of the two warriors but they were strong men and held him firmly and his efforts came to nothing. The blood flowed down over his pale skin. The Druid waited for a moment before he cut into Mancinus’s flesh again, an inch or so higher up where the Druid could see his handiwork more clearly. This time the Roman could not help crying out and the sound cut into Macro’s heart. He raged against his enemy and his inability to do anything to help Mancinus.

As the Druid began to make a third cut, Macro turned away and hurried across to the rear of the tower and looked down into the fort, willing Petillius to appear with the prisoner. Another cry sounded from in front of the fort and Macro clenched his jaw in a silent grimace. Then he saw Petillius appear between two of the stable blocks, thrusting Maridius before him. The prisoner wore only the baggy breeches he had been left with after his questioning some days earlier. Although his face and body were bruised, the swelling around his eyes and lips had subsided.

‘Bring the bastard up, quick!’ Macro bellowed.

He turned and ran across the tower and waved his hands to attract the attention of Caratacus. ‘Enough! Tell your Druid to put aside his blade!’

The enemy commander and his companions looked up at Macro while Mancinus’s head rolled back and he let out a faint groan.

‘What is it?’ Caratacus called back. ‘Do you think to try and stop our entertainment? I thought Romans were used to this. I thought you had stronger stomachs. Are you so easily unmanned by the sight of blood?’

Macro did not respond to the taunt. He knew he had to delay Mancinus’s torment long enough for Maridius to reach the top of the tower. His mind struggled to outline a means of saving Mancinus.