He had been on board for over two months now and was beginning to doubt that the small force despatched to hunt down the fugitive gladiator and his surviving followers would ever find them. The last sighting of Ajax’s ship had been over a month before, off the coast of Egypt. The Romans had followed, once catching sight of a sail on the horizon, only to lose contact during the following night. Since then the search for the fugitives had proved fruitless. The two Roman vessels had searched along the African coast as far as Lepcis Magna before turning about and heading east, scouring the coastline for any sign of Ajax and his men. They had passed by Alexandria two days earlier, low on provisions, but Cato - the prefect in charge of the mission - had been determined to push his men on to the limit before breaking off the search to resupply his vessels. Now Centurion Macro was hungry, frustrated and fed up with the whole business.

He pulled his tunic over his head and climbed up the narrow flight of steps on to the deck. He went barefoot as he had quickly discovered the disadvantages of wearing army boots on a warship. The neatly sandstoned decks provided little grip whenever they got wet and Macro and the other soldiers had a hard time keeping on their feet with iron nails on the soles of their boots. Two centuries of legionaries had been assigned to the warships to augment the strength of the marines; a necessary measure since Ajax and his followers, most of whom were former gladiators like their leader, were more than a match for even the finest soldiers in the Roman army.

As soon as the trierarch saw Macro emerge on deck, he approached him and nodded a greeting.

‘A fine morning, sir.’

‘Is it?’ Macro scowled. ‘I’m on a small, crowded ship, surrounded by the briney and without even a jar of wine for company. Fine doesn’t enter into it.’

The trierarch, Polemo, pursed his lips and looked round. The sky was almost clear, only a handful of brilliant white clouds drifted overhead. A soft breeze filled the sail with a satisfying bulge, like an over-indulged epicurean, and there was a gentle swell on the sea so that the ship rose and fell in a regular, comfortable rhythm. To the right the thin strip of coastline stretched out peacefully. To the left the horizon was clear. A quarter of a mile ahead lay the stern of the other ship, leaving a creamy churn of water in its wake. All in all, as good a day as a sailor could wish for, the trierarch mused.

‘Anything to report?’ asked Macro.