‘Sir, the fact is that we discovered Ajax’s base of operations and succeeded in putting it out of action. We took his ships and accounted for over two hundred of his men. He has between forty and fifty followers left. However, I fear that he still poses a considerable threat to the Empire. I shall, of course, continue to pursue him but I will need to have your warrant to ensure the cooperation of the province’s officials along the Nile. In addition, I will need men to complete the task. A mounted cohort should suffice.’

Petronius let out a bitter laugh. ‘A mounted cohort, you say? A modest request, you might think. But tell me, after having lost one of my warships and its entire crew, as well as thirty of my legionaries, what makes you think I would be prepared to entrust you with any more men? Well?’

‘You can’t afford not to, sir.’

‘Oh, I think I can afford not to. Especially when my forces are thinly stretched as it is. The Nubians have already advanced as far as the first cataract. That fool, Legate Candidus, sent three of his auxiliary cohorts to intercept the Nubian vanguard. They were crushed. I gather barely half of them managed to escape.’

‘That is what I heard at Memphis, sir.’

‘Then you will appreciate why I seem reticent to lend any more troops to you. Hunting this gladiator down is no longer a priority. I need to concentrate all available forces to strike at the Nubians, and drive them out of the province.’

‘I understand, sir, but if we fail to destroy Ajax then you can be sure that he will continue his private war against Rome. He has already nearly cost the Emperor the province of Crete as well as disrupting the sea trade in the eastern Mediterranean. He cannot be permitted to trouble the Empire any longer.’

‘Nor will he, once the Nubians have been repulsed. Then, and only then, will I even consider providing you with any more resources to track down this criminal. Do you understand?’

‘Yes, sir. I just don’t agree with you.’

‘Disagreement is not a privilege that a subordinate can exercise, Prefect,’ Petronius snapped. ‘I am the supreme power here in Egypt. I act in the name of the Emperor and while you are here in my province, you will do as I instruct. That is the end of the matter.’ He paused and smiled coldly. ‘Well, not quite.’

Cato stood still and silent, waiting for the governor to elaborate.

Petronius rose from his desk and crossed his study to the opposite wall where a long map of the Nile had been painted, from the delta all the way into southern Egypt. Beyond the line marking the frontier, the details were few. He reached up and tapped the map.