I sighed. "You have just described a whole generation of young Romans, Teacher. Many of them may be capable of murder, including, quite possibly, this Publius Asicius. But mere proximity to the scene of a crime is not-"

"Asicius is also said to be in debt to Pompey, for some very large loans which the general made to him."

"Still…"

"You see, you have no rejoinder for that, Gordianus. The chain goes back to Pompey and thence to King Ptolemy."

"Your host, Lucceius-did you confront him with your suspicions?"

"Even as my taster lay writhing on the floor! I insisted that Lucceius come and witness the atrocity himself. I demanded that he find out how the soup had been poisoned."

"What was his response?"

"He pretended to be appalled, of course. He said that he would interrogate each of his household slaves himself, and torture them if necessary. Perhaps he did, or perhaps not. I left the next morning, desperate to be away from the place. I told Lucceius that I would be staying at the house of Titus Coponius, but he has made no effort to contact me."

Trygonion, who had been silent for a while, cleared his throat. "Having escaped alive from the man's house, perhaps you would have been wiser not to tell Lucceius where you were headed next." The gallus made a wry face and seemed to be in a mood to cause trouble again, but what he said made sense.

"Am I then to behave like a fugitive or a criminal?" demanded Dio. "Skulking from shadow to shadow, hoping no one sees me, praying that the world will simply forget my existence? Already I put on this absurd disguise to go out during the day-is that not shame enough? I refuse to vanish altogether. To do so would give King Ptolemy unconditional victory. Don't you understand? I am all that remains of the delegation of one hundred who came to speak for the people of Alexandria and their new queen. If I allow fear to turn me invisible and mute, then I might as well never have come to Rome. I might as well be dead!"

With that, Dio gave another shudder and began to weep again. I watched him fight back the tears and struggle to compose himself. Over the last months he had endured much misery and seen unspeakable tragedy, and for all his travails he had nothing to show but bitterness and shame. I was awed by his perseverance.

"Teacher," I said, "what is it that you want from me? I can't force the Senate to hear your demands. I can't make Pompey waver in his support of King Ptolemy. I can't resurrect the dead, or redeem those who betrayed you."

I waited for Dio to answer, but he had not yet composed himself, so I went on. "Perhaps you wish for me to ferret out the truth, so that justice can be done. That's why men usually come to me. But you seem satisfied that you already know the truth. I'm not sure what good it will do you. That's the odd thing about truth, how much one craves it, yet how useless it often is. If you're thinking of bringing charges of murder against King Ptolemy, I'm not sure that a Roman court has jurisdiction over a friendly foreign monarch; I am sure that nothing could be done without the Senate, and we know that you can't rely on them. If you're thinking of bringing a charge against Pompey, then I would advise you to think again. Pompey has enemies, to be sure, but not one of them would be willing to attack him openly in a court of law, no matter how compelling the evidence. Pompey is much too strong."

I wrinkled my brow. "Perhaps it's this Publius Asicius against whom you want to bring charges, for attempting to poison you. If he did put Lucceius's slaves up to it, then you might have a case, provided that Lucceius is not the creature of Pompey that you suspect him to be, and is willing to let his slaves testify against Asicius. Such a trial might be useful. This Publius Asicius can't be too important if I've never heard of him, and that means he might be vulnerable. A trial against him could draw attention to your cause and elicit sympathy. Even so-"

"No, Gordianus," Dio said. "It's not a trial I seek. Do you think I expect justice from a Roman court? I come to you seeking merely to save my own life, so that I can continue with my mission."

I bit my lip. "Teacher, I can't offer you accommodations under my roof. I can't guarantee your safety, for one thing. While I place great trust in my household slaves, this house would hardly be secure against assassins as determined as your enemies appear to be. And then there's the danger to my own family. I have a wife, Teacher, and a young daughter-"

"No, Gordianus, I don't ask to spend a single night under the roof of your splendid house. What I need is your help in deciding whom I can trust and whom I cannot. They say you have ways of finding the truth. They say you have a sense for it, as other men have a sense of smell or taste. You say that truth is often useless, but it might save me now. Can I trust my new host, Titus Coponius? I met him in Alexandria. He is wealthy, educated, a student of philosophy-but can I entrust my life to him? Will he betray me? Is he another of Pompey's tools? You must know how to find out such things."

"Perhaps," I said cautiously, "but the task is more complicated than you may realize. If only you had come to me wanting to recover a stolen ring, or trying to find out whether a rich merchant did or did not murder his wife, or seeking to trace the origin of a threatening letter. Such mysteries are simple, and relatively safe. But to ask the kinds ofquestions you would have me ask, of those who would know the answers, would almost certainly attract the attention of powerful men… "

"You mean Pompey," said Dio.

"Yes, perhaps even Pompey himself." I nervously tapped at my chin. "I would hate for you to think me a coward, Teacher, afraid to move for fear of offending powerful men. In years gone by, I've dared to beard a few lions when the cause demanded it. Sulla the Dictator, for one, when I looked for the truth behind the murder of Sextus Roscius. Marcus Crassus, when he sought to slay a whole household of slaves. Even Cicero, when he grew reckless with power in the year of his consulship. Fortunately, so far, I've never crossed paths with Pompey. I don't wish to do so now. As a man grows older, and presumably wiser, he grows more cautious."

"You won't help me, then?" The despair in his voice made me feel a prickle of shame.

"Teacher, I can't. Even if I were eager to do so, it would still be impossible, at least for a while, because I'm about to go on a long trip. I leave at dawn. My wife has been busy all day packing my things… " I paused, surprised at how hollow my words sounded. What I said was true, and my trip had been planned for a long time. Why did I feel as if I were making excuses?

"Then you cannot help me," said Dio, staring at the floor.

"If the trip were less important," I began, and shrugged. "But it's to see my son Meto. He's been serving under Caesar in Gaul. I haven't seen him for months. Now he's at Caesar's winter quarters in Illyria, hardly close but considerably closer than Gaul, and he may be there for only a short while. I can't miss the chance to see him." "I see," said Dio.

"In other circumstances, I would recommend that you pay a call on my elder son, Eco. He's twice as clever as I ever was-but he's coming with me to visit Meto. We'll both be gone until at the least the end of the month, perhaps longer. The uncertainties of traveling in the winter, you understand… " Again, the words sounded hollow in my ears. I shifted uneasily in my chair, and the room suddenly seemed hot. "Of course, after the trip-that is, when I come back to Rome… "

Dio fixed me with a gaze that pulled at the hair on the back of my neck. I had seen such a glassy stare only in the eyes of dead men, and for a moment I was so unnerved that I couldn't speak. I cleared my throat. "When I come back to Rome, I'll be sure to send a messenger to you at the house of Titus Coponius-"