'Racing?'

'No, only fishing as a matter of fact. That's a pretty lonely sport. Percival's a hit like me-no wife. Tonight we thought we'd get together and see the town. I haven't seen the town for a long while. Those chaps from the Department of the Environment are a pretty sad lot. Couldn't you face being a gra.s.s widower, old man, just for one evening?'

'My last train leaves Euston at 1.30.'

'I've got the flat all to myself tonight. The Environment men have both gone off to a polluted area. You can have a bed. Double or single, whichever you prefer.'

'Please a single bed. I'm getting to be an old man Davis. I don't know what plans you and Percival have...'

'I thought dinner in the Cafe Grill and afterwards a spot of strip-tease. Raymond's Revuebar. They've got Rita Rolls...'

'Do you think Percival likes that sort of thing?'

'I sounded him out, and can you believe it? He's never been to a strip-tease in his life. He said he'd love to take a peek with colleagues he can trust. You know how it is with work like ours. He feels the same way. Nothing to talk about at a party for reasons of security. John Thomas doesn't even have a chance to lift his head. He's morose-that's the word. But if John Thomas dies, G.o.d help you, you might as well die too. Of course it's different for you-you are a married man. You can always talk to Sarah and...'

'We're not supposed to talk even to our wives.'

'I bet you do.'

'I don't, Davis. And if you are thinking of picking up a couple of tarts I wouldn't talk to them either. A lot of them are employed by MI5-oh, I always forget they've changed our names. We are all DI now. I wonder why? I suppose there's a Department of Semantics.'

'You sound a bit fed up too.'

'Yes. Perhaps a party will do me good. I'll telephone to Sarah and tell her-what?'

'Tell her the truth. You are dining with one of the big boys. Important for your future in the firm. And I'm giving you a bed. She trusts me. She knows I won't lead you astray.'

'Yes, I suppose she does.'

'And, d.a.m.n it all, that's true too, isn't it?'

'I'll ring her up when I go out to lunch.'

'Why not do it here and save money?'

'I like my calls private.'

'Do you really think they bother to listen in to us?' Wouldn't you in their position?'

'I suppose I would. But what the h.e.l.l of a lot of dreary stuff they must have to tape.'

2.

The evening was only half a success, though it had begun well enough. Doctor Percival in his slow unexciting fashion was a good enough companion. He made neither Castle or Davis feel he was their superior in the department. When Colonel Daintry's name arose he poked gentle fun at him-he had met him, he said, 'at a shooting week-end. 'He doesn't like abstract art and he doesn't approve of me. That's because I don't shoot,' Doctor Percival explained, 'I only fish.'

They were at Raymond's Revuebar by that time, crushed at a small table, just large enough to hold three whiskies, while a pretty young thing was going through curious antics in a hammock.

'I'd like to get my hook into her,' Davis said.

The girl drank from a bottle of High and Dry suspended above the hammock on a string, and after every swallow she removed a piece of clothing with an air of ginny abandon. At long last they could see her naked b.u.t.tocks outlined by the net like the rump of a chicken seen through a Soho housewife's string bag. A party of businessmen from Birmingham applauded with some violence, and one man went so far as to wave a Diners Club card above his head, perhaps to show his financial standing.

'What do you fish?' Castle asked.

'Mainly trout or grayling,' Percival said.

'Is there much difference?'

'My dear fellow, ask a big-game hunter if there's a difference between lion and tiger.'

'Which do you prefer?'

'It's not really a question of preference. I just love fishing-any fly fishing. The grayling is less intelligent than the trout, but that doesn't mean he's always easier. He demands a different technique. And he's a fighter-he fights until there's no fight left in him.'

'And the trout?'

'Oh, he's the king, all right. He scares easily-nail boots or a stick, any sound you make and he's off. Then you must place your fly exactly, the first time. Otherwise...' Percival made a gesture with his arm as though he were casting in the direction of yet another naked girl who was striped black and white by the lights like a zebra.

'What a bottom!' Davis said with awe. He sat with a gla.s.s of whisky half-way to his lips, watching the cheeks revolve with the same precision as the wheels of a Swiss watch: a diamond movement.

'You aren't doing your blood pressure any good,' Percival told him.

'Blood pressure?'

'I told you it was high.'

'You can't bother me tonight,' Davis said. 'That's the great Rita Rolls herself. The one and only Rita.'

'You ought to have a more complete check-up if you are really thinking of going abroad.'

'I feel all right, Percival. I've never felt better.'

'That's where the danger lies.'

'You almost begin to scare me,' Davis said. 'Nail boots and a stick. I can see why a trout...' He took a sip of whisky as though it were a disagreeable medicine and laid his gla.s.s down again.

Doctor Percival squeezed his arm and said, 'I was only joking, Davis. You're more the grayling type.'

'You mean I'm a poor fish?'

'You mustn't underestimate the grayling. He has a very delicate nervous system. And he's a fighter.'

'Then I'm more of a cod,' said Davis.

'Don't talk to me about cod. I don't go in for that sort of fishing.'

The lights went up. It was the end of the show. Anything, the management had decided, would be an anticlimax after Rita Rolls. Davis lingered for a moment in the bar to try his luck with a fruit machine. He used up all the coins he had and took two off Castle. It's not my evening,' he said, 'his gloom returning. Obviously Doctor Percival had upset him.

'What about a nightcap at my place?' Doctor Percival asked.

'I thought you were warning me off the drink.'

'My dear chap, I was exaggerating. Anyway whisky's the safest drink there is.'

'All the same I begin to feel like bed now.'

In Great Windmill Street prost.i.tutes stood inside the doorways under red shades and asked, 'Coming up, darling?'

'I suppose you'd warn me off that too?' Davis said. 'Well, the regularity of marriage is safer. Less strain on the blood pressure.'

The night porter was scrubbing the steps of Albany as Doctor Percival left them. His chambers in Albany were designated by a letter and a figure D.6 as though it were one more section of the old firm. Castle and Davis watched him pick his way carefully towards the Ropewalk so as not to wet his shoes-an odd precaution for someone accustomed to wading knee-deep in cold streams.

'I'm sorry he came,' Davis said. 'We could have had a good evening without him.'

'I thought you liked him.'

'I did, but he got on my nerves tonight with his d.a.m.ned fishing stories. And all his talk about my blood pressure. What's my blood pressure to do with him? Is he really a doctor?'

'I don't think he's practised much for years,' Castle said. 'He's C's liaison officer with the bacteriological warfare people-I suppose someone with a medical degree comes in handy there.'

That place Porton gives me the shivers. People talk so much about the atom bomb, but they quite forget our little country establishment. n.o.body has ever bothered to march there. n.o.body wears an anti-bacterial b.u.t.ton, but if the bomb were abolished, there'd still be that little deadly test-tube...'

They turned the corner by Claridge's. A tall lean woman in a long dress climbed into a Rolls Royce followed by a sullen man in a white tie who looked furtively at his watch-they looked like actors from an Edwardian play: it was two in the morning. There was a yellow lino worn into holes like a gruyere cheese on the steep stairs up to Davis's flat. With W. I. on the notepaper no one bothered about small details like that. The kitchen door was open, and Castle saw a stack of dirty dishes in the sink. Davis opened a cupboard door; the shelves were stacked with almost empty bottles-the protection of the environment did not begin at home. Davis tried to find a whisky bottle containing enough for two gla.s.ses. 'Oh well,' he said, 'we'll mix them. They're all blends anyway.' He combined what remained of a Johnnie Walker with a White Horse, and obtained a quarter bottle.

'Does no one here ever wash up?' Castle asked.

'A woman comes in twice a week, and we save it all for her.'

Davis opened a door. 'Here's your room. I'm afraid the bed's not made. She's due tomorrow.' He picked a dirty handkerchief off the floor and stuffed it in a drawer for tidiness sake. Then he led Castle back into the sitting-room and cleared some magazines off a chair onto the floor.

'I'm thinking of changing my name by deed poll,' Davis said.

'What to?'

'Davis with an e. Davies of Davies Street has a certain cla.s.sy ring.' He put his feet up on the sofa. 'You know, this blend of mine tastes quite good. I shall call it a White Walker. There might be a fortune in the idea-you could advertise it with the picture of a beautiful female ghost. What did you really think of Doctor Percival?'

'He seemed friendly enough. But I couldn't help wondering...'

'What?'

'Why he bothered to spend the evening with us. What he wanted.'

'An evening out with people he could talk to. Why look further? Don't you get tired of keeping your mouth closed in mixed company?'

'He didn't open his very far. Even with us.'

'He did before you came.'

'What about?'

'That establishment at Porton. Apparently we are far ahead of the Americans in one range of goods and they've asked us to concentrate on a deadly little fellow suitable for employment at a certain alt.i.tude which at the same time can survive desert conditions... All the details, temperature and the like, point to China. Or perhaps Africa.'

'Why did he tell you all that?'

'Well, we are supposed to know a bit about the Chinese through our African contacts. Ever since that report from Zanzibar our reputation stands quite high.'

'That was two years ago and the report's still unconfirmed.'

'He said we mustn't take any overt action. No questionnaires to agents. Too secret for that. Just keep our eyes open for any hint in any report that the Chinese are interested in h.e.l.l's Parlour and then report direct to him.'

'Why did he speak to you and not to me?'

'Oh, I suppose he would have spoken to you, but you were late.'

'Daintry kept me. Percival could have come to the office if he wanted to talk.'

'What's troubling you?'

'I'm just wondering if he was telling you the truth.'

'What earthly reason...?'

'He might want to plant a false rumour.'

'Not with us. We aren't exactly gossips, you and I and Watson.'

'Has he spoken to Watson?'

'No as a matter of fact he gave the usual patter about watertight boxes. Top Secret, he said but that can't apply to you, can it?'

'Better not let them know you told me all the same.'

'Old man, you've caught the disease of the profession, suspicion.'

'Yes. It's a had infection. That's why I'm thinking of getting out.'

'To grow vegetables?'

'To do anything non-secret and unimportant and relatively harmless. I nearly joined an advertising agency once.'

'Be careful. They have secrets too-trade secrets.'

The telephone rang at the head of the stairs. 'At this hour,' Davis complained. 'It's anti-social. Who can it be?' He struggled off the sofa.