Brixus rounded on him angrily. ‘Quiet, you fool! We’ll not speak of this in front of the others. Have the other prisoners taken to one of the huts and placed under guard. No one is to speak to them, is that clear?’

Mandracus nodded and turned to carry out his orders.

‘Marcus.’ Brixus stood in front of him and clasped his shoulders, speaking in an undertone so that his words would not be overheard. ‘I cannot tell you how much good it does my heart to see you again. Come, we must talk. You have arrived at the hour of our greatest need.’

Marcus was aware that the other prisoners were looking at him in astonishment. Then Brixus placed a hand on Marcus’s shoulder and steered him towards the entrance of the leader’s hut. Behind them, the men of the newly arrived column slumped down on the ground by the fires and began to warm themselves. Marcus could see the weariness in their faces and already there came the sound of wailing as the first casualties were made known, shrill cries of grief that pierced the night sky.

Brixus swept the leather curtain aside and gestured to Marcus to enter. Despite its size and the icy temperature outside, the hut felt warm. A large fire was crackling in the centre, tended by a woman feeding split logs into the blaze. Marcus looked for Decimus and saw him sitting against the wall a short distance from the entrance. He glanced round nervously as Marcus and Brixus entered.

‘Who is that?’ Brixus demanded, following the direction of Marcus’s gaze. ‘What are you doing in here?’

‘He’s one of the prisoners,’ Marcus explained. ‘The Roman who destroyed my family and sold my mother and me into slavery.’

Brixus thought a moment before he recalled the details of his last conversations with Marcus over a year ago. ‘Decimus?’

Marcus nodded.

‘The moneylender from Greece? Then what is he doing here?’

‘He is working for Crassus. He was responsible for an attempt on Caesar’s life last year.’

Brixus raised his eyebrows and shook his head in wonder. ‘What’s the matter with these stuck-up Roman nobles? Not satisfied with punishing us slaves, they turn on each other! They’re scum. Utter scum. No better than the meanest street dogs... What do you want me to do with him, Marcus? Shall I have him crucified? Like they crucified those who surrendered at the end of your father’s revolt? Or burned alive, perhaps? The people out there would like that.’

Marcus thought for a moment. There was blood on Decimus’s hands. Not just that of Titus, but countless others he had cruelly exploited and ruined on his path to riches. The offer was tempting.