‘Yes, sir,’ Marcus acknowledged, trying hard to control the fit of shivering that had taken over his body. He was too cold and tired to feel bitter about his former master deciding his destiny. Besides, his mind was fixed on the fact that Decimus was riding with the baggage train. Marcus had caught sight of him on only a handful of occasions since leaving Ariminum and he could not shake the urge to take his revenge. The long days riding had reminded him of all there was to avenge beyond the suffering of his family. Aristides, a slave who had been like a grandfather to Marcus, had also been killed by the moneylender. Even Cerberus, the dog Marcus had rescued from a cruel trader and trained to be his loyal companion, had been clubbed to death by Dedmus’s men when they attacked the farm. A simple death would be too goody Marcus resolved. He must be made to suffer, as his victims had.

‘You’re not really listening to me, are you?’ asked Caesar.

Marcus instantly pushed all thought of Decimus aside and struggled to recall what Caesar had just said. Marcus was vaguely aware of some comment concerning the fortune some famous retiarius had made during the time of Sulla’s dictatorship. He cleared his throat.

‘Yes, sir. It would be nice to make a large sum of money.’

Caesar stared at him indulgently. ‘Marcus, that was a while back, before I began to talk about your training. You’re not paying attention.’

Marcus lowered his gaze. ‘I’m sorry, sir. I am tired. My mind was drifting.’

‘Drifting, eh? You’re considering Decimus again, aren’t you?’

Marcus thought about denying it but dared not risk being seen through by Caesar again, so he nodded. ‘I can’t stop thinking about him. And what he did to my family and friends. I’m sorry, sir, but it is eating me inside to know that he is so close but I can do nothing about it.’

‘All in good time, Marcus. Remember,’ Caesar warned, ‘you need my permission to act. For now it serves my purpose to have him close, but not too close, if you understand me. If Crassus has tasked him with doing me any harm, then Festus and my bodyguards, including you, will make his life difficult.’

‘Difficult, yes, sir,’ Marcus responded. ‘But not impossible. Why take the risk? Why not just have him and his men arrested?’

‘Because they pose no risk to me at present. If they did, then I would do as you say. But for now I am content to have Festus watch them. If they attempt anything we shall catch them, and then I will have proof of Crassus’s treachery. Enough to give me a little power over him, since I doubt the Senate would look too kindly on any man conspiring to murder a proconsul.’ Caesar smiled wryly. ‘In any case, I am not yet convinced that is his plan. I think Crassus has simply sent the man to spy on me, report back, and make a small fortune for his master in the process. Now that would be typical of Crassus!’