'Because the balance of his mind was disturbed. How do we know it was disturbed? – Because he killed himself. Inquest closed. But why was he unbalanced?'

I took a pipe and peered at the crusted ash in it, but then lit it anyway. My tongue already felt like a new-laid tarmac road, so a few more puffs couldn't hurt. 'He'd spent a year in jail. Jn that time his wife might have walked out on him-'

'His wife died five years ago.'

'All right, but he could have gone broke, lost his academic status… anything.'

He tilted his head and looked at me with rather worn curiosity. 'I find that our files have already heard of Professor Spohr. His academic status is… somewhat past. Mostly he spends his time discovering relics and selling them, usually illegally.'

Cyprus is one of the touchiest places about the export of antiquities; the airport is plastered with notices forbidding it. I shrugged again. 'He obviously didn't belong to the jail-going classes, so just being inside might have shaken him up. But he could live through the year because he'd always got something to look forward to: getting out. And then he gets out and finds it's all flat and grey and no hope of that improving, so… bang.'

'That is good," he said admiringly. 'That is very sensitive and understanding. What did he talk to Mr Caviti about this afternoon?'

I almost blew it – little though I knew anyway. With the rambling, late-night chatter and then the flattery, he'd done a nice job of easing me off balance for the important question. If I'd had less experience with coppers who were even bigger bastards, I'd probably have babbled of green fields. As it was- I looked uninterested and shook my head. 'I dunno. I think it was just a booze-up with an old cell-mate. Anyway, Ken didn't tell me anything.' And I knew Ken hadn't told him anything, either. Drunk or sober, Ken's distrust of the Law was in far better training than mine.

He nodded vaguely. 'You see, perhaps Mr Cavitt was the last person to see him alive…'

'Didn't his daughter? – Mitzi?'

'Ah yes, perhaps.' As if he'd forgotten her.

'Didn't you ask her why she thought he killed himself?'

'Yes.' He nodded again and his head went on waggling as if he were too tired to switch it off. Finally he said: 'Yes. She thinks it may be because he had incurable cancer and only two months to live.'

After a long time I said: 'And you still think it would be better if he'd left a suicide note?'

He smiled wearily. 'Yes.'

When I got downstairs again, Mitzi and Kapotas had vanished and Sergeant Papa was snoring steadily on a bench seat by the bar. Ken and Nina sat at a table, each with a small brandy glass, not saying anything.

I sat down. 'Did you know anything about the Prof dying of cancer?'

'Yep,' Ken said, a chopped-off sound. He went on staring at the tabletop. 'Mitzi told me just now.'

'Well, I suppose it must be true, and the post-mortem'11 show it, but…' I shook my head helplessly. 'But if he'd only got a couple of months to go, it must've been pretty bad. Did he know about it in jail?'

'I'm sure he didn't. And the medical checks you got in there, they just about counted your legs and arms and no more. I remember he'd got this sort of hernia trouble, but that was right at the end and he said he'd wait and see a doctor in Vienna. Well, it turned out that was it: they operated and found a secondary cancer in his groin.'

'Where was the main one?'

'It was a… a melanoma or some word like that, sort of skin cancer in the middle of his back. Apparently it doesn't hurt, there. In fact, the docs said it wouldn't hurt at all until near the end and then you go down fast."

Nina shivered and instinctively tightened her folded arms. I may have shivered myself, a bit. I'd stopped knowing what to feel about the Professor, but at least a 9 mm slug through the mouth sounded a bit more reasonable, now.

'If those buggers in Biet Oren had spotted it when he could still be operated on,' Ken said quietly, 'he'd still be alive. They bloody well killed him.'

'Well, not quite that,' I tried to soothe him. 'You should get back to bed; tomorrow's another day.'

'It looks like today from where I'm sitting.' Well, yes, since it was nearly three in the morning. But he suddenly slapped both hands on the table, levered himself upright and gave a long shuddering stretch like a cat. 'See you, kids.' And he'd gone.

Papa snored on. Nina looked at me with solemn eyes. 'Well?'

'I'll settle the account and you get off home, love.'

'I have to charge you for my time,' she said.

'I know. And 1 won't say I didn't end up with regrets, but… maybe another time. Right now I'd be as much use as a banana skin.' I started dealing pound notes from my wallet and grinned suddenly at what Kapotas would have said about Castle's money. At what he certainly would say, tomorrow, when I tried to prise some more out of him.

She said: 'I wouldn't have thought you needed us, usually."

I let that go and kept on dealing. When I'd run dry, there were just sixteen pounds on the table.

Nina said carefully: 'I'D take Suzie's share, too.'

Td assumed that. Ken hasn't got any money anyway.'

'Well… we usually reckon on ten pounds each.'

I nodded and looked around. The bar takings would be locked up and I didn't fancy borrowing off Papa. Then I remembered the desk petty cash box; there just might be something left in it.

The only person left in the hall was a constable dozing in a chair opposite the stairway. He half-opened an eye and watched as I dishonestly appropriated property belonging to another with the intention of permanently depriving the other of it, or however they put it in Cyprus. The box had a pound note, a 500-mil., a new 250-mil., a few coins and even fewer stamps than I'd seen earlier. It came out at just over two quid.

'Can I owe you the last two? They'll have to pay me in a day or so if only to get rid of me.'

'Okay.' She collected up the notes, half turned to go, then turned back and said: 'Something about you and your friend Ken worries me.'

'What?'

'The way you don't take anything seriously, like being broke and this man shooting himself…'

'I thought Ken was taking that pretty hard."

'The idea didn't shock him enough. It's… it's as if you were people in a war and you don't care about tomorrow.'

I frowned. 'That's a sort of shivery idea. I don't think it's like that.'

'People like you frighten me.' And she reached suddenly, pecked my cheek and bounced neatly out of the front door.

I watched the door wig-wag to a stop behind her, then slowly put the cashbox away under the desk and then just sat, too tired to do anything else. And too tired to feel anything, either.

Inspector Lazaros and his team came down at twenty past three. 'We are going now, you may lock up. Tomorrow I shall need formal statements from Papadimitriou and the daughter and you.'

'Not too early.'

'I hope not. Good night, Captain.'

'Just mister.'

I sat on for a while after they'd gone, then went in and woke Papa. 'They've gone, so you can lock up if there's nobody else left on a short-night. What happened to Kapotas?'

He yawned massively, showing a row of big, shabby teeth like a horse's. 'He rang up his wife and then went to bed in 217.' We locked the bar, put out the lights and went back into the hall, and I leant against a wall and watched him lock the front door and tried to think what was nagging at my mind.

He turned and saw me 'still there and stopped, smiling vaguely, just by the wooden postbox, like a big nesting-box, hung on the wall by the bus timetables and rack of airline brochures.

I said: 'Does the hotel have a key to that, or is it a proper post office box?'