Brennus began loosening his shoulders. 'Just what we need,' he said.

Tarquinius remained silent, observing the legions as they moved into position. Romulus could hear him muttering.

'Crassus has too many infantry. Fool!'

'What's wrong?'

'Look.' The Etruscan pointed out the thousands of legionaries training in the hot sun. 'No horsemen.'

Romulus found it hard not to be stirred by the magnificent sight of so many soldiers moving in unison but his eyes narrowed as he saw what Tarquinius meant. The ancient battles mentioned by Cotta had involved large numbers of cavalry. They were a vital part of any army.

'All I have seen are the Gauls beside our tent lines, and a couple of cohorts of Iberians. Barely two thousand.' Tarquinius wiped his brow. 'That's not enough.'

Brennus punched the air with each fist, indicating to Romulus that he copy the action. 'Thirty thousand infantry should crush any enemy,' he panted, still finding it bizarre that he was now serving in the Roman army. An army which had crushed his people.

'Numbers aren't everything. Think about Hannibal,' countered Romulus. 'A lot of his victories against superior forces were thanks to his cavalry.'

Tarquinius was pleased by the insight. 'And the Parthians will have hardly any foot soldiers.'

'So how do they fight?' asked Brennus in surprise.

'Mounted archers. They attack in rapid waves, firing arrows.' Tarquinius plucked an imaginary bowstring. 'Storms of them.'

'Two thousand horse will struggle to contain those,' said Brennus.

'Precisely. And that's before the cataphracts charge.'

The word was unknown to Romulus and Brennus.

'Cataphracts – fully armoured mounts and riders.'

Romulus felt uneasy. 'Surely Crassus knows this too?'

'He is relying on the king of Armenia,' Tarquinius said thoughtfully. 'Artavasdes has up to six thousand cavalry.'

'That's all right then, surely?'

'If Crassus doesn't throw away the opportunity.'

They waited for him to continue. A stiff breeze sprang up and Romulus shivered. The army had seemed invincible.

Seemed.

'What do you mean?' Brennus was also concerned.

'First we have to march across Asia Minor, into Syria and Judaea,' said the Etruscan lightly. 'The stars and sea currents show several possible outcomes.'

Brennus relaxed. During the voyage, he had come to trust Tarquinius implicitly, his predictions of bad weather and sightings of pirates proving correct virtually every time.

'If Crassus marches us into Armenia with Artavasdes,' Tarquinius continued, 'we could be feasting in Seleucia in eighteen months!'

But Romulus was sceptical of Tarquinius' words, which plainly covered all outcomes. He had yet to be convinced of the soothsayer's power. The young soldier had persuaded himself that Tarquinius must have overheard him and Brennus talking about the fight outside the brothel. And anticipating the odd storm and the presence of pirates in wild backwaters was hardly proof of mystical ability.

At the mention of Seleucia, Brennus shivered. No Allobroge could ever have travelled that far, he thought. Is that where my journey will end?

They ran on, passing a group of senior officers clustered round a stocky man outside one of the camps. None even glanced at the three soldiers passing by. Sunlight reflected brightly off the central figure 's gilded breastplate.

Crassus was planning the campaign ahead.

'Our fates are in his hands,' said Romulus.

'It has already been decided,' pronounced Tarquinius. 'Our destinies are not linked for ever. And Crassus' fate is his own.'

Romulus increased his pace. There 'd been enough talk of ill omens and bad luck. All he wanted to do was to push himself physically, to forget everything else for a while. His friends would give him guidance when needed. Despite Tarquinius' predictions about the army's shortcomings, it was hard to imagine how such a massive force could possibly fail.

Chapter XIX: Fabiola and Brutus

More than fourteen months pass . . .

The Lupanar, Rome, spring 53 BC

In the lifetime that had gone by since Gemellus had sold Fabiola, she had grown into an extraordinarily beautiful woman. Sleek black hair fell in a mane to a narrow waist. Piercing blue eyes mesmerised anyone who gazed into them for more than a few heartbeats. A slightly aquiline nose added character to stunning looks. Her full breasts and sinuous figure reminded men of the goddess Venus.

Fabiola had not been in the Lupanar for long before word had spread of her incredible ability to please. After Brutus' first visit, Jovina decided to drop prices for the new girl only a fraction and it was a gamble that paid off richly. Despite her huge expense, she was soon the most popular prostitute.

The old madam began to earn a fortune from Fabiola alone. Within six months, her shrewd purchase from Gemellus had paid for itself many times over. In a rare gesture, Jovina even let Fabiola start keeping a slightly larger percentage than the other women. But her owner was still sharp as a blade. Fabiola was never allowed outside without company, nor was there any mention of manumission.

Her customers ranged from rich merchants to politicians and military officers – every part of the ruling class. Under her spell, many came to see Fabiola at least once a week and she was showered with expensive perfume, dresses and jewellery. Gifts were always welcome, particularly money, which was carefully locked away in an iron trunk. Every month, Benignus or Vettius escorted her to the Forum. There Fabiola deposited the cash with Greek moneylenders, where it earned a small amount of interest. The only way she could see of leaving the Lupanar was to accumulate wealth, and to leave was still her ambition. Fabiola rarely made a withdrawal, unless it was needed to buy information about Romulus.

Since the fateful night when Fabiola had missed seeing her twin outside the brothel, she had left no stone unturned in her search for him. But there seemed to be no sign of Romulus at all. Fabiola's only hope was based on the fact that she was unable to find out much about the inhabitants of the gladiator schools. There were just four in the city and only one of the lanistae, the owners of the ludi, was a regular visitor to the Lupanar. She was now sure that Romulus was not and had never been in the Ludus Dacicus. Its short, balding lanista was so infatuated with Fabiola that he had told her about practically every fighter that had entered the gates of his school. And although she knew it was likely that her brother had long since fled Rome, she longed to discover something – anything – about what had happened to him.

Fabiola learned the art of patience. No matter how long it took, she would wait until the opportunity arrived to discover her brother's fate.

Her climb to such popularity had made her surprisingly few enemies among the prostitutes. From the first day, Fabiola had made a deliberate policy of being friendly to the others – passing on customers, buying gifts, helping the girls who got sick. Some resented the beauty's meteoric rise to success, but they kept quiet. Doormen, cooks – even the madam – approved of Fabiola. She also struck up a quiet friendship with Docilosa, finding her loyal and discreet.

When one woman had several regulars, they were kept carefully apart. Where possible, visiting times were planned, so none even suspected a rival's existence. It was one of Jovina's strictest rules. Jealousy over popular girls had spilled over into bloodshed before and such things were very bad for business.

Sensing its obvious advantage, Fabiola kept rigidly to this arrangement. More than one client had appeared jealous at the mere idea that she saw other men. If they were to be used to the utmost, maximising her position of power, customers needed to relax the instant they walked through the Lupanar's door. Fabiola was not just a prostitute now. Aided by her natural intelligence, she had grown up fast. Sexual pleasure was only part of the experience. She was an expert at massaging tight muscles, washing off daily grime, feeding tasty morsels and making light conversation. While in her company, a customer felt like the most important man in the world. What he didn't realise was just how much information the beautiful young woman was gleaning from every visit.