We had moved to the library where Ned and Barley had begun. Brock had set up a screen and projector. He had put chairs in a horseshoe with a special person in his mind for each chair, for Brock, like other violent minds, had an exaggerated appetite for menial labour. He had been listening to the interview over the relay and despite his sinister inklings about Barley a glow of excitement smouldered in his pale Baltic eyes. Barley, deep in thought, lounged in the front row between Bob and Clive, a privileged if distracted guest at a private screening. I watched his head in silhouette as Brock switched on the projector, first turned downward in contemplation, then sharply upward as the first frame struck the screen. Ned sat beside me. Not a word, but I could feel the disciplined intensity of his excitement. Twenty male faces flicked across our vision, most of them Soviet scientists who on a first hasty search around the Registries of London and Langley were deemed to have had possible access to the Bluebird information. Some were featured more than once: first with beards then with their beards touched out. Others were shown when they were twenty years younger because that was all the archives had of them.

'Not among those present,' Barley pronounced when the parade was over, suddenly shoving his hand to his head as if he had been stung.

Bob just couldn't believe this. His incredulities were as charming as his credulities. 'Not even a perhaps or a maybe, Barley? You sound pretty sure of yourself for a man who was drinking well when he made the original sighting. Jesus, I've been to parties where I couldn't remember my own name.'

'Not a tickle, old boy,' said Barley and returned to his thoughts.

Now it was Katya's turn, though Barley couldn't know it. Bob advanced on her cautiously, a Langley professional showing us his footwork.

'Barley, these are some of the boys and girls around the Moscow publishing scene,' he said over-casually as Brock ran up the first stills. 'People you might have bumped into during your Russian travels, people at receptions, book fairs, people on the circuit. If you see anybody you know, holler.'

'Bless us, that's Leonora!' Barley cut in with pleasure while Bob was still talking. On the screen a splendid burly woman with a backside like a football field was marching across a stretch of open tarmac. 'Leni's top gun with SK,' Barley added.

'SK?' Clive echoed as if he had unearthed a secret society.

'Soyuzkniga. SK order and distribute foreign books throughout the Soviet Union. Whether the books get there is another matter. Leni's a riot.'

'Know her other name?'

'Zinovieva.'

Confirmed, said Bob's smile to the knowing.

They showed him others and he picked the ones they knew he knew, but when they showed him the photograph of Katya that they had shown to Landau � Katya in her overcoat with her hair up, coming down the steps with her perhaps-bag - Barley muttered, 'Pass,' as he had to all the others he didn't know.

But Bob was delightfully upset. Bob said, 'Hold her there, please,' so unhappily that a babe in arms would have guessed that this picture had unrecognised significance.

So Brock held, as we all did: held our breath.

'Barley, the little lady here with the dark hair and big eyes in this picture is with the October Publishing Company, Moscow. Speaks a fine English, classical like yours and Goethe's. We understand she's a redaktor , commissioning and approving English language translations of Soviet works. No bells?

'No such luck', said Barley.

At which Clive handed him to me. With a tip of his head. Take him, Palfrey. Your witness. Scare him.

I do a special voice for my indoctrination sessions. It's supposed to instil the terror of the marriage vow and I hate it because it is the voice that Hannah hates. If my profession had a false white coat, this would be the moment where I administered the wicked injection. But that night as soon as I was alone with him, I chose a more protective tone and became a different and perhaps rejuvenated Palfrey, the one that Hannah used to swear could overcome. I addressed Barley not as I would some raw probationer but as a friend I was seeking to forewarn.

Here's the deal, I said, using the most non-legal jargon I could think of. Here's the noose we're putting round your neck. Take care. Consider.

Other people, I make them sit. I let Barley roam because I had seen that he was more at case when he was able to pace and fidget and chuck his arms back in a luxurious stretch. Empathy is a curse even when it is short-lived, and not all the bad law in England can protect me from it.

And while I temporarily warmed to him I noticed a number of things about him I had not registered in the larger company. How his body leaned away from me, as if he were guarding himself against his deep-rooted disposition to give himself to the first person who asked for him. How his arms, despite their striving for self-discipline, remained unruly, particularly at the elbows, which like renegades seemed to be wanting to break free of whatever uniform they were pressed into.

And I noticed my own frustration that I could still not observe him closely enough, but cast round for other glimpses of him in the gilded mirrors as he passed them. Even to this day, I think of him as being a long way off.

And I noticed the pensiveness in him as he dipped in and out of my homily, taking a point or two then swinging away from me in order to digest it, so that suddenly I was facing a breadth of powerful back that was not to be reconciled with the unreconciled front.

And how, as he returned to me, his eyes lacked the subservience that in other recipients of my wise words so often sickened me. He was not daunted. He was not even touched. His eyes disturbed me nonetheless, as they had the first time they appraised me. They were too truthful, too clear, too undefended. None of his milling gestures could protect them. I felt that I or anyone else, could have waded into them and claimed possession of him, and the feeling scared me as if it were a threat. It made me fear for my own security.

I thought about his file. So many headlong crashes, acts of seeming self-destruction, so little prudence. His frightful school record. His efforts to earn himself a few laurels by boxing, for which he ended up in the school sanatorium with a broken jaw. His expulsion for being drunk while reading the Epistle at Sung Eucharist. 'I was drunk from the night before, sir. It was not intentional.' Flogged and expelled.

How convenient, I thought, for him and me, if I could have pointed to some great crime that haunted him, some act of cowardice or omission. But Ned had shown me his entire life, secret annexes and all, medical history, money, women, wives, children. And it was small stuff all the way. No big bang, no big crime. No big anything - which may have been the explanation of him. Was it for want of a greater sea that he had repeatedly wrecked himself against life's little rocks, challenging his Maker to come up with something bigger or stop bothering him? Would he be so headlong when faced with greater odds?

Then abruptly, before I am aware of it, our rôles are reversed. He is standing over me, peering down. The team is still waiting in the library and I hear sounds of their restlessness. The declaration form lies before me on the table. But it is me that he is reading, not the form.

'So have you any questions?' I ask up at him, conscious of his height.

'Anything you want to know before you sign?' I am using my special voice after all, for self-protection.

He is at first puzzled, then amused. 'Why? Have you got more answers you want to tell me?'

'It's an unfair business,' I warn him sternly. 'You've had a big secret thrust on you. You didn't ask for it but you can't unknow it. You know enough to hang a man and probably a woman. That places you in a certain category. It brings obligations you can't escape.'

And, God help me, I think of Hannah again. He has woken the pain of her in me as if she were a brand-new wound.

He shrugs, brushing off the burden. 'I don't know what I know,' he says.

There is a thump on the door.

'The point is, they may want to tell you more,' I say, softening again, trying to make him aware of my concern for him. 'What you know already may be only the beginning of what they want you to find out.'

He is signing. Without reading. He is a nightmare client. He could be signing his life away and he wouldn't know it and wouldn't care. They are knocking but I have still to add my name as witness.

'Thanks,' he says.

'What for?'

I put away my pen. Got him, I think, in ice-cold triumph, just as Clive and the rest of them march in. A tricky customer but I signed him up.

But the other half of me is ashamed and mysteriously alarmed. I feel I have lit a fire inside our own camp, and there is no knowing how it will spread or who will put it out.

The only merit of the next act was that it was brief. I was sorry for Bob. He was never a sly man and he was certainly not a bigot. He was transparent, but that is not yet a crime, even in the secret world. He was more in Ned's stamp than Clive's, and nearer to the Service's way of doing things than to Langley's. There was a time when Langley had a lot of Bob's sort, and was the better for it.

'Barley, do you have any concept at all of the nature of the material that the source you call Goethe has so far provided? Of its overall message, shall we say?' Bob enquired awkwardly, putting up his broad smile.

Johnny had pitched the same sort of question at Landau, I remembered. And burned his fingers.

'How can I?' Barley replied. 'I haven't set eyes on the stuff. You won't let me.'

'Are you quite certain Goethe himself gave you no advance indication? No whispered word, author to publisher, of what he might – one day, if you both kept your promises – supply? Beyond what you have already accounted for in Peredelkino - the broad talk of weaponry and unreal enemies?'

'I've told you everything I remember,' said Barley, shaking his head in confusion.

Also like Johnny before him, Bob began squinting at the brief he held below the table. But in Bob's case with genuine discomfort. 'Barley, in the six visits you have made to the Soviet Union over the last seven years have you formed any connection, however briefly, with peaceniks, dissidents or other unofficial groups of that nature?'

'Is that a crime?'

Clive cut in. 'Answer the question, will you?'

Amazingly, Barley obliged. Sometimes Clive was simply too small to reach him. 'You meet all sorts, Bob. Jazz people, book people, intellectuals,journalists, artists - it's an impossible question. Sorry.'