Time passed and finally the fisherman drew first blood, a wily throw half covering the secutor with his weighted net. Instantly the trident swept forward, plunging deep into the other's right thigh.

Thinking the end was near, the crowd roared.

Desperately the hunter threw himself forward as the barbed prongs ripped clear of his flesh. Groaning in pain, he reached up with his sword and slashed the retiarius across the belly as he fell.

His opponent also slumped to his knees.

Blood dripped on to the sand from both men.

There was a pause while the two wounded fighters dragged air into their chests, struggling for the energy to continue. People in the audience screamed encouragement, throwing pieces of bread and fruit at them. The secutor was first to stand, throwing off the net and raising his weapon. With a struggle, the retiarius also got up, holding his stomach with one hand, gory trident with the other.

'It will be over soon,' said Brutus, pointing. Both were clearly badly hurt.

Fabiola closed her eyes, imagining Romulus.

The staff officer leaned forward and tapped the shoulder of the portly man in front. 'Ten thousand sestertii on the retiarius, Fabius,' he said, his eyes glinting.

Fabius half turned, an amazed look on his red face. 'His guts are about to fall out, Brutus!'

'Scared to lose?'

'You're on,' laughed Fabius and the pair gripped forearms.

Fabiola pouted and caressed Brutus' neck. 'You're wasting money,' she whispered in his ear.

He winked. 'Never underestimate a fisherman – especially a wounded one.'

Although the secutor could not move fast, he was still armed with sword and shield. Shuffling after the retiarius, he cut and slashed rapidly, parrying occasional trident thrusts with little difficulty. The fisherman made sporadic attempts to retrieve his net but was blocked every time. He seemed quite weak, barely fending off the hunter's aggressive efforts.

Different sections of the crowd shouted their support for each man. Typically, most were backing the fighter who seemed more likely to win.

The secutor.

Watching intently, Brutus stayed quiet amidst the clamour. Fabiola held on to his arm, wishing she could stop the barbaric display and save a man's life.

Weakened by his injury, the retiarius slowed even further and the hunter redoubled his efforts, trying to get in a mortal blow. Tiring himself out, he paused for a moment, confident the other would not attack. The fisherman groaned and blood oozed from between his fingers.

Silence fell on the arena.

The audience held its breath as the secutor prepared to end the fight.

Suddenly the retiarius gasped and looked over his enemy's shoulder. Confused, the hunter's gaze turned away for a single heartbeat.

It was enough.

The armoured fighter spun back, eyes widening in horror as the trident drove deep into his throat. Hanging off the sharp tines, he made a loud choking noise and dropped both sword and shield. The fisherman quickly released his weapon and let the dead man fall to the sand. Swaying gently, he received the crowd's approval with glazed eyes before collapsing on top of his opponent.

Brutus was delighted. 'The oldest trick in the book,' he crowed, poking Fabius in the back.

The fat noble grimaced at the unexpected turn of events. 'A slave will bring you the money in the morning,' he muttered with poor grace before turning back to his companions.

Fabiola's eyes were drawn to the retiarius, who was still lying across the dead secutor. No one else even gave him a glance. He was a slave. 'Will he live?' she asked anxiously.

'Of course,' replied Brutus, patting her arm. 'Only army surgeons are better than those in the gladiator schools. He 'll need dozens of stitches in the muscle and skin, but within two months that fisherman will be back in the arena, good as new.'

Fabiola smiled, but inside she was boiling with rage. One brave man had just died and another had been badly wounded. For what? The mob's amusement, nothing more. And when he recovered, the survivor would have to endure it all over again. As Romulus must have until he fled after the fight outside the brothel.

Never let the savages catch you alive, brother, she prayed. There is no mercy in Rome.

Afterwards, Brutus took her to the house of a political ally on the Palatine hill. Gracchus Maximus, a senator with close links to Caesar, had invited him to a feast.

On the journey from the Campus Martius, Fabiola brought up the subject of the triumvirate again. Away from other nobles, Brutus seemed more at ease.

'Since the death of Julia, Pompey's wife, relations have become very strained.' He frowned. 'It was a tragedy.'

The death of a woman during childbirth was all too common and that of Caesar's only daughter had weakened the strong bond between him and Pompey.

'The loss of a child is hard to bear,' said Fabiola, thinking of her mother.

'Because he is not in the city, Caesar needs Pompey to fight his corner here. Fortunately the general still respects their agreement enough to do that. But it won't be for ever.'

'Surely the revolt in Gaul will keep Caesar completely tied up?' News had reached Rome that the previously localised unrest was spreading. A young chieftain named Vercingetorix was rallying the tribes under one banner.

'Not for long,' replied Brutus briskly. 'And it keeps his legions battleready while most of Pompey's do nothing but play dice in Greece and Hispania.'

Fabiola concealed her surprise. She had not known it had come to this already. Men were preparing for civil war.

The litter came to a halt, ending the conversation.

Apart from Brutus' villa and Gemellus' domus, Fabiola had not been in any large houses. As befitted an extremely wealthy man, Gracchus Maximus' residence was enormous. A high, plain wall guarded its exterior, the only entrance a pair of wooden doors strengthened with iron studs. One of Brutus' guards rapped on the portal with his sword hilt. The demand was answered immediately and they alighted, leaving their slaves outside. Entering a grand atrium, Brutus and Fabiola were welcomed by the shaven-headed majordomo, who bowed and guided them into the house proper.

Each room that followed was more magnificent than the last. Gold candelabras held hosts of burning candles, illuminating graceful statues in alcoves along the painted walls. Beautiful mosaics were laid out everywhere, even in the hallways. Fountains in the garden murmured gently through open doors.

Reaching the palatial banqueting hall, Fabiola's eyes momentarily widened. Its floor consisted of one huge image, decorated in a circular fashion with scenes from Greek mythology. Hundreds of thousands of tiny clay pieces had been laid in intricate patterns to form a richly coloured picture. Surrounded by lesser gods, Zeus occupied the centre of the design. It was a more stunning piece of art than anything Fabiola had ever seen. Perhaps the villa she dreamt of could look like this.

The room was crowded with nobles mingling, and slaves serving food and drink. Loud conversation filled the air. If the chance presented itself, this would be a good situation to meet potential clients. Great care would have to be taken to avoid Brutus noticing. As the major-domo led them towards Maximus, Fabiola's eye was caught by a large statue on a plinth occupying a prominent position near the entrance.

Brutus followed her gaze. 'Julius Caesar – my general,' he stated proudly.

Carved from white marble, the figure was taller than a man. Caesar was regally depicted in a toga, a thick sweep of cloth covering the right arm. The hair was cut short in military style, the jaw shaven. The face blankly watching the guests was long and thin, the nose aquiline.