Accounts of the incident by police, press and even delegates themselves were hopelessly confused. Some declared it was spontaneous; a collective gesture aggravated by the word 'British'which happened to be exhibited on the side of the library building. It was natural, they said, that as the day of decision in Brussels drew rapidly closer, the Movement's policy of opposition to the Common Market should assume a specifically anti- British form. Others swore they had seen a sign, a white handkerchief that fluttered from a window; one witness even claimed that a rocket had risen behind the town hall and emitted stars of red and gold. For some the crowd had surged with a positive impulse, for others it had 'flowed'; for others again it had trembled. 'It was led from the centre,' one senior police officer reported. 'The periphery was motionless until the centre moved.' 'Those at the centre,' Western Radio maintained, 'kepttheir composure. The outrage was perpetrated by a few hooligans at the front. The others were then obliged to follow.' On one point only they seemed to agree: the incident had taken place when the music was loudest. It was even suggested by a woman witness that the music itself had been the sign which started the crowd running.

The Spiegel correspondent, on the other hand, speaking on Northern Radio, had a circumstantial account of how a grey omnibus chartered by a mysterious Herr Meyer of Luneburg conveyed 'a bodyguard of thirty picked men' to the town centre of Hanover one hour before the demonstration began and that this bodyguard, drawn partly from students and partly from young farmers, had formed a 'protective ring' round the Speaker's podium. It was these 'picked men' who had started the rush. The entire action had therefore been inspired by Karfeld himself. 'It is an open declaration,' he insisted, 'that from now on, the Movement proposes to march to its own music.'

'This Eich,' Turner said at last. 'What's the latest?'

' She's as well as can be expected.'

'How well's that?'

'That's all they said.'

'Oh fine.'

'Fortunately neither Eich nor the Library are a British responsibility. The Library was founded during the Occupation but handed over to the Germans quite soon afterwards. It's not controlled and owned exclusively by the Land authority. There's nothing British about it.'

'So they've burned their own books.' Shawn gave a startled smile.

'Well yes, actually,' he said. 'Come to think of it, they have. That's rather a useful point; we might even suggest it to Press Section.'

The telephone was ringing. Shawn lifted the receiver and listened.

'It's Lumley,' he said, putting his hand over the mouthpiece. 'The porter told him you're in.'

Turner appeared not to hear. He was studying another telegram; it was quite a short telegram, two paragraphs, not more; it was headed 'personal for Lumley' and marked 'immediate' and this was the second copy passed to Turner.

'He wants you, Alan.' Shawn held out the receiver.

Turner read the text once and then read it again. Rising, he went to the steel cupboard and drew out a small black notebook, unused, which he thrust in to the recesses of his tropical suit.

'You stupid bugger,' he said very quietly, from the door. 'Whydon't you learn to read your telegrams? All the time you've been bleating about fire extinguishers we've had a bloody defector on our hands.'

He held up the sheet of pink paper for Shawn to read.

'A planned departure, that's what they call it. Forty-three files missing, not one of them below Confidential. One green classified Maximum and Limit, gone since Friday. I'll say it was planned.'

Leaving Shawn with the telephone still in his hand, Turner thudded down the corridor in the direction of his master's room. His eyes were a swimmer's eyes, very pale, washed colourless by the sea.

Shawn stared after him. That's what happens, he decided, when you open your doors to the other ranks. They leave their wives and children, use filthy language in the corridors and play ducks and drakes with all the common courtesies. With a sigh, he replaced the receiver, raised it again and dialled News Department. This was Shawn, he said, S-H-A-W-N. He had had rather a good idea about the riots in Hanover, the way one might play it at Press Conference: it was nothing to do with us after all, if the Germans decided to burn their own books... He thought that might go down pretty well as an example of cool English wit. Yes, Shawn, S-HA- W-N. Not at all; they might even have lunch together some time.

Lumley had a folder open before him and his old hand rested on it like a claw.

'We know nothing about him. He's not even carded. As far as we're concerned, he doesn't exist. He hasn't even been vetted, let alone cleared. I had to scrounge his papers from Personnel.'

'And?'

'There's a smell, that's all. A foreign smell. Refugee background, emigrated in the thirties. Farm School, Pioneer Corps, Bomb Disposal. He gravitated to Germany in forty-five. Temporary sergeant;Control Commission; one of the old carpetbaggers by the sound of it. Professional expatriate. There was one in every mess in Occupied Germany in those days. Some survived, some drifted in to the consulates. Quite a few of them reverted; went in to the night or took up German citizenship again. A few went crooked. No childhood, most of them, that's the trouble. Sorry,' Lumley said abruptly, and almost blushed.

'Any form?'

'Nothing to set the Thames on fire. We traced the next of kin.

An uncle living in Hampstead: Otto Harting. Sometime adoptive father. No other relations living. He was in the pharmaceutical business. More an alchemist by the sound of it. Patent medicines, that kind of thing. He's dead now. Dead ten years. He was a member of the Hampstead Branch of the British Communist Party from forty-one to forty-five. One conviction for little girls.'

'How little?'

'Does it matter? His nephew Leo lived with him for a bit. Something may have rubbed off. The old man might even have recruited him then, I suppose...

Long-term penetration. That would fit the mould. Or someone may have reminded him of it later on. They never let you go, mind, once you've had a taste of it. Bad as Catholics.'

Lumley hated faith.

'What's his access?'

'Obscure. His function is listed as Claims and Consular, whatever that means. He has diplomatic rank, just. A Second Secretary. You know the kind of arrangement. Unpromotable, unpostable, unpensionable. Chancery gave him living space. Not a proper diplomat.'

'Lucky bloke.'

Lumley let that go.

'Entertainment allowance' -Lumley glanced at the file - 'ahundred and four pounds per annum, to be spread over fifty cocktail guests and thirty-four dinner guests. Accountable. Pretty small beer. He's locally employed. A temporary, of course. He's been one for twenty years.'

'That leaves me sixteen to go.'

'In fifty-six he put in an application to marry a girl called Aickman. Margaret Aickman. Someone he'd met in the Army. The application was never pursued, apparently. There's no record of whether he's married since.'

'Perhaps they've stopped asking. What are the missing files about?'

Lumley hesitated. 'Just a hotchpotch,' he said casually, 'ageneral hotchpotch. Bradfield's trying to put a list together now.' They could hear the porter's radio blaring again in the corridor.

Turner caught the tone and held on to it: 'What sort of hotchpotch?'

'Policy,' Lumley retorted. 'Not your field at all.'

'You me an I can't know?' 'I mean you needn't know.' He said this quite casually; Lumley's world was dying and he wished no one ill. 'He's chosen a good moment, I must say,' he continued, 'with all this going on. Perhaps he just took a handful and ran for it.'

'Discipline?'

'Nothing much. He got in a fight five years ago in Cologne. A night-club brawl. They managed to hush it up.'

'And they didn't sack him?'

'We like to give people a second chance.' Lumley was still deep in the file, but his tone was pregnant with innuendo.

He was sixty or more, coarse-spoken and grey; a grey-faced, grey-clothed owl of a man, hunched and dried out. Long ago he had been Ambassador to somewhere small, but the appointment had not endured.

'You're to cable me every day. Bradfield is arranging facilities. But don't ring me up, do you understand? That direct line is a menace.' He closed the folder. 'I've cleared it with Western Department, Bradfield's cleared it with the Ambassador. They'll let you go on one condition.'

'That's handsome of them.'

'The Germans mustn't know. Not on any account. They mustn't know he's gone; they mustn't know we're looking for him; they mustn't know there's been a leak.'

'What if he's compromised secret Nato material? That's as much their pigeon as ours.'

'Decisions of that kind are none of your concern. Your instructions are to go gently. Don't lead with your chin. Understand?'

Turner said nothing.

'You're not to disturb, annoy or offend. They're walking on a knife edge out there; anything could tilt the balance. Now, tomorrow, any time. There's even a danger that the Huns might think we were playing a double game with the Russians. If that idea got about it could balls everything up.'

'We seem to find it hard enough,' Turner said, borrowing from Lumley's vocabulary, 'playing a single game with the Huns.'

'The Embassy have got one idea in their heads, and it's not Harting and it's not Karfeld and least of all is it you. It's Brussels. So just remember that. You'd better, because if you don't you'll be out on your arse.'

'Why not send Shawn? He's tactful. Charm them all, he would.'

Lumley pushed a memorandum across the desk. It contained a list of Harting's personal particulars. 'Because you'll find him and Shawn won't. Not that I admire you for that. You'd pull down the whole forest, you would, to find an acorn. What drives you? What are you looking for? Some bloody absolute. If there's one thing I really hate it's a cynic in search of God. Maybe a bit of failure is what you need.'

'There's plenty of it about.'

'Heard from your wife?'

'No.'

'You could forgive her, you know. It's been done before.'

'Jesus, you take chances,' Turner breathed. 'What the hell do you know about my marriage?'

'Nothing. That's why I'm qualified to give advice. I just wish you'd stop punishing us all for not being perfect.'

'Anything else?'

Lumley examined him like an old magistrate who had not many cases left.

'Christ, you're quick to despise,' he said at last. 'Youfrighten me, I'll tell you that for nothing. You're going to have to start liking people soon, or it'll be too late. You'll need us, you know, before you die. Even if we are a second best.' He thrust a file in to Turner's hand. 'Go on then. Find him. But don't think you're off the leash. I should take the midnight train if I were you. Get in at lunchtime.' His hooded yellow eyes flickered towards the sunlit park. 'Bonn'sa foggy bloody place.'