'In Rome they say that the Baians have developed a positive mania for pisciculture.'

'They've turned it into a vice,' Orata confided with a laugh, 'the way the Parthians are said to turn simple horse racing into a vice. But it brings a tidy profit for the man who knows the secrets of the trade.'

'It's an expensive hobby?'

'It can be.'

'And Lucius was prepared to indulge in it? I don't understand. Was he wealthy or not? If he had so much money, why did he not own his own home?'

'Actually…' Orata paused and his face lengthened. 'You must understand, Gordianus, that after my ancestors and the gods there is nothing I respect so much as the confidentiality of another man's private finances. I'm not the sort to gossip about the source or extent of someone else's wealth. But since Lucius is dead…'

'Yes?'

'May his shade forgive me if I tell you that there was more than met the eye when it came to Lucius's finances.' 'I don't follow you.'

'Lucius had all sorts of improvements in mind for this villa. Expensive renovations and additions. That was why he asked me to the house for a few days, to discuss the feasibility and expense of some projects he had in mind.'

'But why would he spend so much to improve a house in which he was only a tenant?'

'Because he was planning to buy the house from Crassus, very soon.'

'Did Crassus know this?'

'I think not. Lucius told me he would be approaching Crassus with an offer within a month or so, and he seemed quite confident that Crassus would accept. Do you have any idea what a villa like this costs, especially when you consider the expenses of running the place?' Orata lowered his voice. 'He told me, very confidentially, that his chance to break away from Crassus had come at last. He suggested that he and I should launch a partnership; my business expertise matched with his capital, he said. He came up with some good ideas, I must admit.' 'But you were wary.'

'The word "partnership" always makes me wary. I learned early on always to make my own way.'

'But if Lucius was offering the money-'

'That's just it: where did he get it? When I rebuilt the baths here, it was Crassus who signed the final contract, and Crassus always saw that I received my payments on time. But occasionally there were incidental expenses, little things about which Lucius hated to bother Crassus, so Lucius would pay for them himself. He always acted as if it were a great sacrifice just to come up with a few sesterces to buy a wagonload of lime.' Orata wrinkled his plump brow. 'I told you earlier that Lucius always served sumptuous dinners, but that was only in the last year or two. Before that, he always pretended to be better off than he was. You could see the brass beneath the gold, so to speak – the oysters might be fresh, but you could see that the slaves kept washing the same silver spoons to serve each new course because there weren't enough silver spoons to go around.'

'A subtle point, surely.'

'In my line of work one learns to observe the fine distinctions between true wealth and pretence. I hate being left with a bill I can't collect.'

'And in the last year or so Lucius had managed to buy all the silver spoons he needed?'

'Exactly, And he seemed to be in the market for more.'

'I suppose he must have been saving his stipend from Crassus for a long time.'

Orata shook his head glumly.

'Then what? Did he have some other source of income?'

'None that I know of. And there is very little that transpires on the Cup that I don't know about – very little of a legitimate, legal nature, that is.'

'Do you mean-'

'I only mean that Lucius's sudden wealth was an enigma to me.'

'And to Crassus?'

'I don't think Crassus knew about it.'

'But what could Lucius have done, without Crassus's even knowing? Are you suggesting some clandestine-'

'I suggest nothing,' Orata blandly insisted. He turned from the view of the bay and looked into the house. The last traces of the dinner had vanished; even the serving tables had been taken away. He sighed and suddenly seemed to lose all interest in our conversation. 'I think I shall go to my room now.'

'But, Sergius Orata, surely you have some ideas, some suspicions-'

He shrugged quite extravagandy, a well-practised gesture good for escaping unwanted investors and clients too small to bother with. 'I only know that one of Marcus Crassus's reasons for coming here was to have a careful look at Lucius's financial records, so that Crassus might assess his own resources on the Cup. If he looks long and hard enough, I suspect that Crassus may uncover some very unpleasant surprises.'

On my way to the library I avoided walking through the atrium where the remains ofLucius Licinius were displayed; if a part of my mission now included uncovering some embarrassing transactions or even criminal activity on his part, I did not care to encounter his shade in the middle of the night. I took a lamp to find my way through the unfamiliar halls, but hardly needed it; moonlight poured like liquid silver through the windows and skylights, flooding the halls and open spaces with a cold luminescence.

I hoped to find the library empty, but when I turned the corner I saw the same bodyguard who had attended the door the previous night. At my approach he turned his head with military precision and fixed me with a piercing gaze. His stare softened when he recognized me. The frigid mask of his face loosened; indeed, the closer I came the more chagrined he looked. When I was close enough to hear the voices from within, I understood his embarrassment.

They must have been speaking quite loudly for the sound to pass through the heavy oak door. Crassus's voice, with its oratorical training, penetrated more clearly; the other voice had a lower, rumbling timbre that was less easy to distinguish, but the bombastic tone unmistakably belonged to Marcus Mummius.

'For the last time, there will be no exceptions!' This came from Crassus. A rumbling retort from Mummius followed, too muffled for me to catch more than a few words – 'how many times… always loyal, even when… you owe me this favour…'

'No, Marcus, not even as a favour!' Crassus shouted. 'Stop dredging up the dead past. This is a matter of policy – there's nothing personal in it. If I allow even a single sentimental exception, there will be no end to it – Gelina will have me save them all! How do you think that would look in Rome? No, I won't be made a fool of because you lack the good sense to avoid this kind of petty attachment-'

This evoked angry shouting from Mummius; I was unable to make out the words, but there was no mistaking the note of anguish amid the fury. An instant later the door abruptly opened, so violently that the bodyguard started back and drew his sword.

Mummius emerged, red-faced, his eyes bulging, his jaw set hard enough to grind stones. He turned back towards the room and clenched his fists at his sides, making the veins in his thick forearms writhe like the one that pulsed across his forehead. 'If you and Lucius had allowed me to buy him for myself, this wouldn't be happening! You wouldn't be able to touch the boy! If Jupiter himself tried to harm a hair on his head, I would-'

He made a choking noise and began to shake, unable to go on. For the first time he seemed to notice that someone else was in the hall. He turned to look blankly first at the guard and then at me. His furious expression never changed, but his eyes began to glisten hotly as they filled with tears.

Farther down the hall, toward the atrium, a door opened. Gelina, her hair awry, her makeup smeared, peered toward us with a look of confusion. 'Lucius?' she whispered hoarsely. Even from such a distance I could smell the wine from her pores.

Crassus emerged from the library. There was a moment of strained silence. 'Gelina, go back to your bed,' Crassus said sternly. She drew her eyebrows together and meekly obeyed. Crassus dilated his nostrils with a deep breath and lifted his chin.