Lenia picked up, the toga. She shook it lethargically, trying not to notice the dirt it had just acquired. `Oh, you're back, Falco.'

`Hello,, you old bag of malice. How's the dirty clothes business?'

`Stinking as usual.' She had a voice that could have carried halfway to the Palatine, with all the sweetness of a one-note trumpet giving the orders; in a legionary parade. `Did you tell that bastard Petronius he could doss upstairs?'

`I said he could. We're working together now.'

`Your mother was here with that pet snake of hers.

According to her you'll be working for him.'

'Lenia, I haven't done what my mother told me for at least twenty years.'

`Big talk, Falco!'

I work for myself- and with persons I select on the basis of their skill, application, and amiable habits.'

`Your ma says Anacrites will keep you up to the mark.'

`And, I say he can wind himself on to a catapult and wang himself over the Tiber.'

Lenia laughed. Her mirth contained a mocking note.' She knew the hold Ma had over me or thought she did.

I arrived upstairs out of breath, out of practice for the climb. Petronius seemed surprised it was only me. For some reason he supposed that having; drawn, up a strikingly attractive advertisement in the Forum he would be inundated with sophisticated clients all seeking his help with intriguing legal claims. Of course none had come. `Did you put our address?'

`Don't make me weep, Falco.'

`Well, did you?'

`Yes.' A vague look crossed his face.

The apartment looked smaller and. shabbier than ever. There, were two rooms, one for sleep and one for everything else, plus a balcony. That had what Smaractus described as a river view. It was true, if you were prepared to sit in a permanent twist on its wonky ledge. There was room to perch on a bench out there with a girlfriend, but it was wise not to wriggle about too much in case the brackets holding up the balcony sheared off.

The only things I had thought worth taking away when Helena and I moved across the street were my bed, an antique tripod table Helena had once bought for me, and our collection of kitchenware (not exactly imperial equipment). That meant there was now nothing to sleep on, but Petro had created a neat floor-level nest for himself with some sort of bedding roll he had probably kept from our army days. A few clothes were hung on the hooks I had knocked in when I lived there. A stool was set pedantically with his personal toilet things: comb, toothpick, and strigil and oilflask for the baths.

In the outer room nothing much had altered. There was a table, a bench, a small brick cooking range, a couple of lamps, and a bucket for slops. On the griddle sat an extremely well-scoured mess tin that I failed to recognise. On the table were ranged a redware bowl with matching beaker, a spoon and a knife. More organised than I had ever been, Petronius had already bought in a loaf, eggs, dried beans, salt, pine nuts, olives, a lettuce, and a small collection of sesame cakes. He had a sweet tooth.

`Come in. Well, Marcus, my boy; this is like old times.' My heart sank. Of course I was nostalgic for the old days of freedom, of women, drink, and careless irresponsibility Nostalgia was pleasant, but that was all. People move on. If Petronius wanted to regress to being a lad again, he was on his own. I had learned to enjoy clean bedding and regular meals.

`You know how to camp out.' I wondered how soon the novelty would fade.

`It's not necessary to live in squalor as you did.'

`My way of life as a bachelor was perfectly respectable.' It had had to: be. I had spent much of the time trying to lure women into the, apartment with fake tales of its fantastic amenities. They all knew I was lying, but the spell I spun made them expect certain standards. Anyway, they had all – heard that even after I left home my mother took care of me. `Ma put the fear of all Hades into the roaches. And Helena kept us very smart once she moved in.'

`I had to sweep under the cooking bench.'

`Don't be an old biddy. Nobody sweeps under there.'

Petronius Longus stretched his tall frame. He hit the ceiling and swore; briefly. I warned him that if he had been in the bedroom he would have gone through the roof tiles, possibly dislodging some and killing people in the street, causing their relatives to sue him. Before he could start criticising my choice of apartment,. I said, `I can see one startling omission from the bijou housekeeping: no amphorae.'

A black look darkened Petro's face. I realised all his wine must be back at the house Silvia still occupied. She would know what depriving him of it meant too him. If their dispute remained acrimonious Petronius could have seen the last of his wonderful ten-year collection'. He looked sick.

Luckily there was still an old half-amphora of mine hidden under the floorboards. I pulled it out quickly and sat him out on the balcony in the evening sun to apply himself to forgetting his tragedy.

I was still intending to go home to dine with Helena, but somehow bolstering Petro took longer than I expected. He was deeply depressed. He was missing his children. He was missing the vigiles even more. He was furious with his wife, but unable to rant at her since she wouldn't speak to him. He already harboured suspicions about working with me Uncertainty about his future had started to gnaw at him, so instead of being full of anticipation about his new life he was beginning to grow truculent.

I let him take the lead with the wine, a role he assumed with panache.

Soon we had both drunk enough to start arguing once more about the dismembered hand. Then there' was nothing for it but to brood on the condition of society, the brutality of the city, the harshness of life, and the cruelty of women.

`How did the cruelty of women creep in there?' I pondered. `Fusculus says that hand is almost certainly a woman's so it was probably hacked off by an angry man.'

`Don't be pernickety.' Petro had plenty of theories about how brutal women were, and was liable to relate them for hours if I allowed it.

I sidetracked him with my abortive enquiries at the Atrium of Liberty. `So that's it, Petro. Some poor bitch is dead. Dead and unburied. Jointed like a roast, then flung into the water supply.'

`We ought to do something.' It was the violent declamation of a man who had forgotten to eat, although he remembered what a wine cup was for.

`What, for instance?'

`Find out more about this corpse – like where the rest of it is.'

`Oh, who knows?' My head was swimming more than my conscience liked. I felt none too keen on tripping down six flights of stairs then up a few more on the opposite side of the street to reach Helena and home.

`Somebody knows. Somebody did it. He's laughing. He thinks he's got away with it.'

`He has, too.'

`Falco, you're a miserable pessimist.'

`A realist.'

`We're going to find him.'

It was now clear we were going to get very drunk indeed. `You can find him.' I tried to rise. `I have to go and see my wife and baby.'

`Yes.' Petro was magnanimous, with all the despairing self-sacrifice of the newly bereaved and the heavily drunk. `Never mind me. Life has to go on. Go and see little Julia and Helena, my boy. Lovely baby. Lovely lady. You're a lucky man, a lovely man -'

I couldn't leave him. I sat down again.

Thoughts persisted in my old friend's head, spinning round and round like off-balance planets. `That hand was given to us because we are the lads who can sort this.'

'It was given to us because we stupidly asked what it was, Petro.'

`But that's it exactly. W e asked the question. That's what this is all about, Marcus Didius: being in the right place and asking the apt question. Wanting answers, too. Here are some more questions: how many more bits of body are there floating like shrimps in the city water supply?'