'What about him? Did he have another girlfriend too?'

'No.'

'That's a short answer. Is there a long explanation?'

'He's not like the others.'

This surprised me. 'What are you saying? He really likes men? Or he doesn't know how to get on with women?' I stopped short of the more disgusting alternatives.

Plancina shrugged helplessly. 'It's hard to say. He's good company; they both are. But none of us like to get involved with Grumio.'

'Trouble?'

'Nothing like that. We all reckon he never has much time for it.'

'For what?' I asked, innocently.

'You d.a.m.n well know what!'

I conceded that I knew. 'He talks about it.'

'That means nothing, Falco!' We both laughed. Then Plancina struggled to enlighten me. 'He probably is normal, but he never bothers much.'

'Too conceited?' I guessed.

'That's it.' I swear she was blushing. Some girls who give the impression they are ready for anything are strangely prudish in conversation. She made herself try to elaborate: 'If you had anything to do with him, you'd feel he would be sneering at you behind your back. Then if he did anything, he wouldn't want to enjoy it.' No good at it either, probably.

'That's interesting.' Discussing another man's impotence - or even his indifference -- was outside my sphere. I remembered that the night I went to dinner with Chremes and Phrygia I had seen Plancina herself being entertained at the Twins' tent. 'You've had dealings with the clowns yourself. saw you drinking with them both one night at Abila -'

'Drinking is all there was. I got talked into it by another girl. Phrosine has her eye on Tranio.'

'Popular fellow! So you drew the straw for Grumio?'

'Not likely! I went home. I remember what Ione used to say about him.'

'Which was?'

'If he could do it, and if he did enjoy it, n.o.body else got any fun.'

'Sounds as if Ione had some practice.' I asked how she had come to know such intimate details if Grumio rarely involved himself in s.e.x.

'She liked a challenge. She went after him.'

'So what exactly was the situation there?' I recapped. 'Ione was sleeping with both Tranio and Grumio, Tranio on the side, and Grumio perhaps under protest. And were there plenty of others?'

'No one important. She'd stopped bothering with the rest. This is why I said it must be one of the clowns. She told me she had her hands full, what with trying to get at Tranio without Afrania noticing, and then having to use all her tactics to lure Grumio into anything. She said she was ready to chuck it all up, go back to the village she came from in Italy, and vamp some dumb farmer into marriage.'

'A lesson to you,' I commented. 'Don't wait too long to retire, Plancina.'

'Not in this b.l.o.o.d.y group!' she agreed. 'I haven't been any help, have I?'

'Don't think that.'

'But you still don't know.'

'I know enough, Plancina.' I knew I had to work on the clowns.

'Be careful then.'

I thought little of her warning when she gave it. I watched her leave, carrying the soup bowl she had brought me. Then, with the eerie ability the clowns had to turn up just when they were on my mind, one of them came sauntering to my tent.

It was Grumio. On my guard, I was ready for most things, though not for what was about to transpire. I was certainly not ready to accuse him of anything. My bets were still on Tranio anyway.

Grumio parried with a few casual questions about Helena and then asked, 'Where's Musa?' He sounded so casual I knew that it mattered.

'I've no idea.' I had forgotten about him. Maybe he was being entertained by Byrria.

'That's interesting!' exclaimed Grumio, knowingly. I had a feeling of being teased and spied upon, as if I were being set up for one of the Twins' practical jokes. Taking advantage of a man whose much-loved girlfriend had been stung by a scorpion would be just like them. I even felt anxious in case another attempt had been made on Musa's life.

Deliberately showing no further interest, I swung myself to my feet and made as if I were going in to see Helena. Grumio failed to enlighten me. I waited until he left. With a sense of unease I called Musa's name. When there was no answer, I lifted the flap on his part of our shared tent.

It was empty. Musa was not there. Nothing was there. Musa, with all his meagre property, had gone.

I had believed him to be homesick, but this was ridiculous.

I stood, unable to take in what was happening, staring at the bare ground in the empty tent. I was still there when footsteps hurried up behind me. Then Byrria brushed against me as she pushed me aside to look.

'It's true!' she exclaimed. 'Grumio just told me. There's a camel missing. And Grumio thought he saw Musa riding off back the way we came.'

'Alone? Across the desert?' He was a Nabataean. He would be safe, presumably. But it was incredible.

'He had talked about it.' I could tell the girl was unsurprised.

Now I was feeling really grim. 'What's going on, Byrria?' Whatever their strange relationship, I had had the impression that Musa might confide in her. 'I don't understand!'

'No.' Byrria's voice was quiet, less hard than usual, yet strangely dull in tone. She seemed resigned to some dirt fatality. 'Of course you don't.'

'Byrria, I'm tired. I've had a terrible day, and my worries about Helena are nowhere near over yet. Tell me what has upset Musa!'

I realised now that he had been upset. I recalled his anguished face as he beat the scorpion to death in such a frenzy. I remembered it again later, when he came to offer help - help I had curtly refused. He had looked withdrawn and defeated. I was not an idiot. It was a look I didn't want to see, but one I recognised.

'Is this because he's fond of Helena? It's natural, when we have lived so closely as friends.'

'Wrong, Falco.' Byrria sounded bitter. 'He was fond fond of you. He admired and hero-worshipped you. He had much deeper feelings for Helena.' of you. He admired and hero-worshipped you. He had much deeper feelings for Helena.'

Stubbornly I refused to accept what she was saying. 'He didn't have to leave. He was our friend.' But I was long accustomed to Helena Justina attracting followers. Helena's devotees came from some strange walks of life. The very top, too. A quiet, competent girl who listened to people, she attracted both the vulnerable and those with taste; men liked to think they had privately discovered her. Their next mistake was discovering that privately she belonged to me.

As I stalled, Byrria reacted angrily: 'There was no room for him! Don't you remember today when you were looking after Helena? You did everything, and she wanted only you. You know he would never have told either of you how he felt, but he could not bear being no use to her.'

I breathed slowly. 'Don't go on.'

Finally, too late, our misunderstandings unravelled. I wondered if Helena knew. Then I remembered the night we had entertained Byrria. Helena would never have joined me in teasing either Musa or Byrria if she had understood the situation. The actress confirmed it, reading my thoughts: 'He would have died of shame if she had ever found out. Don't tell her.'

'I'll have to explain where he is!'

'Oh you'll do it! You're a man; you'll think up some lie.'

The wrath with which the girl had just spoken was typical of her contempt for all things masculine. But her earlier bitterness brought another thought to me: 'And what about you, Byrria?'

She turned away. She must have been able to hear that I had guessed. She knew I meant no harm to her. She needed to tell somebody. Unable to prevent herself, she admitted, 'Me? Well what do you think, Falco? The only man I could not have - so naturally I fell in love with him.'

My own heart ached for the girl's distress, but frankly I had far worse on my mind.

I found out that Musa had already been gone for hours. Even so, I would probably have ridden after him. But with Helena lying so ill, that was impossible.

Chapter LIX.

Despite my efforts to keep the poison from entering her bloodstream, Helena soon had a high fever.

There was a small Roman garrison at Palmyra, I knew, Another we had left behind at Damascus. Either might contain somebody with medical knowledge. Even if not, the troops would have tried out the local physicians and would be able to recommend the least dangerous to consult. As an ex-soldier, and a Roman citizen, I was ready to use my influence to beg for help. Most frontier garrisons were an abusive bunch, but mentioning that Helena's father sat in the Senate should encourage the career-conscious. There was always a chance, too, that among the battered legionaries I might find some ex-British veteran I knew.

I reckoned we needed a doctor as soon as possible. At first, it had not seemed to matter which way we went; soon I wished we had turned back to Damascus. That was nearer to civilisation. Who could say what we were heading towards instead?

Helena lay helpless. Even in lucid moments she hardly knew where she was. Her arm gave her increasing pain. She desperately needed rest, not travel, but we could not stop in the wilderness. Our Palmyrene guides had adopted that annoying trait in foreigners: looking deeply sympathetic whilst in practice ignoring all my pleas for help.

We pressed on, with me having to do all the driving now that Musa had decamped. Helena never complained - quite unlike her. I was going frantic over her fever. I knew how badly her arm hurt, with a burning pain that could be caused by the cuts I had had to make, or by something worse. Every time I dressed the wound it looked more red and angry. To kill the pain I was giving her poppy juice, in melted honey drinks since I distrusted the water. Phrygia had produced some henbane to supplement my own medicine. For me, the sight of Helena so drowsy and unlike herself was the worst part. I felt she was going a long way from me. When she slept, which was most of the time, I missed not being able to talk to her properly.

People kept coming up, as if to check on us. They were kind, but it meant I could never sit and think. The conversation that stays in my mind most clearly was another involving Grumio. It was the day after the accident, in fact. He turned up again, this time in a most apologetic mood.

'I feel I let you down, Falco. Over Musa, I mean. I should have told you earlier.'

'I could do with him,' I agreed tersely.

'I saw him ride off, but hardly thought he could be leaving you permanently.'

'He was free to come or go.'

'Seems a bit odd.'

'People are.' I may have sounded grim. I was feeling drawn. After a hard day on the desert road, with no hope of reaching the oasis yet at the dire pace we were travelling, I was at a low ebb.

'Sorry, Falco. I guess you're not feeling talkative. I brought you a flagon, in case it helps.'

It was welcome. I felt obliged to invite him to stay and share the first measure with me.

We talked of this and that, of nothing in particular, and of Helena's progress or lack of it. The wine did help. It was a fairly ordinary local red. Petronius Longus, the Aventine's wine expert, would have likened it to some off-putting substance, but that was just him. This was perfectly palatable to a tired, dispirited man like me.

Recovering, I considered the flagon. It was a handy size, about right for a packed lunch if you were not intending to do any work afterwards. It had a round base covered in wickerwork, and a thin, loosely plaited carrying string.

'I saw one like this at a scene I'll not forget.'

'Where was that?' asked Grumio, disingenuously.

'Petra. Where Heliodorus was drowned.'

Naturally the clown expected me to be watching him, so instead I stared into the fire as if gloomily remembering the scene. I was alert for any twitches or sudden tensions in him, but noticed none. 'These are about the most common kind you can get,' he observed.

It was true. I nodded easily. 'Oh yes. I'm not suggesting it came from the same vintner, in the same basket of shopping.' All the same, it could have done. 'There's something I've been meaning to ask you, Grumio. People have been wishing on me the idea that Heliodorus was killed because of his gambling habits.'

'You asked Tranio about it.' I was interested to hear they had conferred.

'So I did. He lost his temper,' I mentioned, now turning a calm stare on him.

Grumio cradled his chin, looking reflective. 'I wonder why that could be?' He spoke with the light twist of malice I had heard from him before. It was hardly evident - could have been an unfortunate mannerism - except that one of the times I had heard it was when he was entertaining the crowd at Gerasa by hurling a knife at me. I remembered that rather clearly.

I stayed calm. 'The obvious reason is he had something to hide.'

'Seems a bit too too obvious, though?' He made it sound like a question I should have thought of for myself. obvious, though?' He made it sound like a question I should have thought of for myself.

'There has to be some explanation.'

'Maybe he was afraid you had found out something that looked bad for him.'

'That's a good thought!' I replied brightly, as if I had been incapable of it myself. We were sparring here, each pretending to be simple. Then I let a growl slink back into my voice. 'So tell me about you and your tentmate playing dice with the playwright, Grumio!'

He knew there was no point denying it. 'Gambling's not a crime, is it?'

'Nor is having a gambling debt.'

'What debt? Playing was just a lark from time to time. We soon learned not to bet seriously.'

'He was good?'

'Oh yes.' There was no hint that Heliodorus might have cheated. Sometimes I wonder how gambling sharks get away with it - and then I talk to an innocent minnow, and realise.

Tranio might know that Heliodorus had weighted his dice; I had wondered about that when I talked to him. So now I considered the interesting prospect of Tranio perhaps keeping this information from his so-called friend. Just what was was the relationship between these two? Allies covering up for each other? Or a pair of jealous rivals? the relationship between these two? Allies covering up for each other? Or a pair of jealous rivals?

'So what's the big secret? I know there must be one,' I urged him, putting on my frank, successful-informer air. 'What's Tranio's beef?'

'Nothing big, and not a secret.' Not now, anyway; his friendly tentmate was about to land him in it without compunction. 'What he was probably loath to tell you was that once, when he and I had been having an argument, he played with Heliodorus while I was off on my own - '

'With a girl?' I too could be disingenuous.