To every clandestine operation, says the folklore, belong more days of waiting than are numbered in Paradise, and for both George Smiley and Toby Esterhase, in their separate ways, the days and nights between Sunday evening and Friday seemed often numberless, and surely bore no relation to the Hereafter. They lived not so much by Moscow Rules, said Toby, as by George's war rules. Both changed hotels and identities that same Sunday night, Smiley decamping to a small hôtel garni in the old town, the Arca, and Toby to a distasteful motel outside the town. Thereafter the two men communicated between call-boxes according to an agreed rota, and if they needed to meet, they selected crowded outdoor places, walking a short distance together before parting. Toby had decided to change his tracks, he said, and was using cars as sparingly as possible. His task was to keep the watch on Grigoriev. All week he clung to his stated conviction that, having so recently enjoyed the luxury of one confession, Grigoriev was sure to treat himself to another. To forestall this, he kept Grigoriev on as short a rein as possible, but to keep up with him at all was a nightmare. For example, Grigoriev left his house at quarter to eight each morning and had a five-minute walk to the Embassy. Very well : Toby would make one car sweep down the road at seven-fifty exactly. If Grigoriev carried his brief-case in his right hand, Toby would know that nothing was happening. But the left hand meant 'emergency', with a crash meeting in the gardens of the Elfenau palace, and a fallback in the town. On the Monday and Tuesday, Grigoriev went the distance using his tight hand only. But on the Wednesday it was snowing, he wished to clear his spectacles, and therefore he stopped to locate his handkerchief, with the result that Toby first saw the brief-case in his left hand, but when he raced round the block again to check, Grigoriev was grinning like a madman and waving the brief-case at him with his right. Toby, according to his own account, had 'a total heart attack'. The next day, the crucial Thursday, Toby achieved a car meeting with Grigoriev in the little village of Allmendingen, just outside the town, and was able to talk to him face to face. An hour earlier, the courier Krassky had arrived, bringing Karla's weekly orders : Toby had seen him enter the Grigoriev residence. So where were the instructions from Moscow? Toby demanded. Grigoriev was cantankerous and a little drunk. He demanded ten thousand dollars for the letter; which so enraged Toby that he threatened Grigoriev with exposure then and there; he threatened to make a citizen's arrest and take him straight down to the police station and charge him personally with posing as a Swiss national; abusing his diplomatic status, evading Swiss tax laws, and about fifteen other things, including venery and espionage. The bluff worked, Grigoriev produced the letter, already treated, with the secret writing showing between the handwritten lines. Toby took several photographs of it, then returned it to Grigoriev.

Karla's questions from Moscow, which Toby showed to Smiley late that night in a rare meeting at a country inn, had a beseeching ring : '... report more fully on Alexandra's appearance and state of mind...Is she lucid? Does she laugh and does her laughter make a happy or a sad impression? Is she clean in her personal habits, clean finger-nails, brushed hair? What is the doctor's latest diagnosis; does he recommend some other treatment?'

But Grigoriev's main preoccupations at their rendezvous in Allmendigen turned out not to be with Krassky, nor with the letter, nor its author. His lady-friend of the Visa Section had been demanding outright to know about his Friday excursions, he said. Hence his depression and drunkenness. Grigoriev had answered her vaguely; but now he suspected her of being a Moscow spy, put there either by the priest or, worse, by some other frightful organ of Soviet Security. Toby, as it happened, shared this belief, but did not feel that much would be served by saying so.

'I have told her I shall not make love to her again until I completely trust her,' Grigoriev said earnestly. 'Also I have not yet decided whether she shall be permitted to accompany me in my new life in Australia.'

'George, this is a madhouse!' Toby told Smiley in a furious mixture of images, while Smiley continued to study Karla's solicitous questions; even though they were written in Russian. 'Listen, I mean how long can we hold the dam? This guy is a total crazy!'

'When does Krassky return to Moscow?' Smiley asked.

'Saturday midday.'

'Grigoriev must arrange a meeting with him before he leaves. He's to tell Krassky he will have a special message for him. An urgent one.'

'Sure,' said Toby. 'Sure, George.' And that was that.

Where had George gone in his mind? Toby wondered, watching him vanish into the crowd once more. Karla's instructions to Grigoriev seemed to have upset Smiley quite absurdly. 'I was caught between one total loony and one complete depressive,' Toby claims of this taxing period.

While Toby, however, could at least agonize over the vagaries of his master and his agent, Smiley had less substantial fare with which to occupy his time, which may have been his problem. On the Tuesday, he took a train to Zurich and lunched quietly at the Kronenhalle with Peter Guillam, who had flown in by way of London at Saul Enderby's behest. Their discussion was restrained, and not merely on the grounds of security. Guillam had taken it upon himself to speak to Ann while he was in London, he said, and was keen to know whether there was any message he might take back to her. Smiley said icily that there was none, and came as near as Guillam could remember to bawling him out. On another occasion - he suggested - perhaps Guillam would be good enough to keep his damned fingers out of Smiley's affairs? Guillam switched the topic hastily to business. Concerning Grigoriev, he said, Saul Enderby had a notion to sell him to the Cousins as found rather than process him at Sarratt. How did George feel about that one? Saul had a sort of hunch that the glamour of a senior Russian defector would give the Cousins a much-needed lift in Washington, even if he hadn't anything to tell, while Grigoriev in London might, so to speak, mar the pure wine to come. How did George feel on that one, actually?

'Quite,' said Smiley.

'Saul also rather wondered whether your plans for next Friday were strictly necessary,' said Guillam, with evident reluctance.

Picking up a table-knife, Smiley stared along the blade.

'She's worth his career to him,' he said at last, with a most unnerving tautness. 'He steals for her, lies for her, risks his neck for her. He has to know whether she cleans her finger-nails and brushes her hair. Don't you think we owe her a look?'

Owe to whom? Guillam wondered nervously as he flew back to London to report. Had Smiley meant that he owed it to himself? Or did he mean to Karla? But he was far too cautious to air these theories to Saul Enderby.

From a distance, it might have been a castle, or one of those small farmsteads which sit on hilltops in the Swiss wine country, with turrets, and moats with covered bridges leading to inner courtyards. Closer to, it took on a more utilitarian appearance, with an incinerator, and an orchard, and modern outbuildings with rows of small windows rather high. A sign at the edge of the village pointed to it, praising its quiet position, its comfort, and the solicitude of its staff. The community was described as 'interdenominational Christian theosophist', and foreign patients were a speciality. Old, heavy snow cluttered fields and roof-tops, but the road which Smiley drove was clear. The day was all white; sky and snow had merged into a single, uncharted void. From the gatehouse a dour porter telephoned ahead of him and, receiving somebody's permission, waved him through. There was a bay marked 'DOCTORS' and a bay marked 'VISITORS' and he parked in the second. When he pressed the bell, a dull-looking woman in a grey habit opened the door to him, blushing even before she spoke. He heard crematorium music, and the clanking of crockery from a kitchen, and human voices all at once. It was a house with hard floors and no curtains.

'Mother Felicity is expecting you,' said Sister Beatitude in a shy whisper.

A scream would fill the entire house, thought Smiley. He noticed pot plants out of reach. At a door marked 'OFFICE' his escort thumped lustily, then shoved it open. Mother Felicity was a large, inflamed-looking woman with a disconcerting worldliness in her gaze. Smiley sat opposite her. An ornate cross rested on her large bosom, and while she spoke, her heavy hands consoled it with a couple of touches. Her German was slow and regal.

'So,' she said. 'So, you are Herr Lachmann , and Herr Lachmann is an acquaintance of Herr Glaser , and Herr Glaser is this week indisposed.' She played on these names as if she knew as well as he did they were lies. 'He was not so indisposed that he could not telephone, but he was so indisposed that he could not bicycle. That is correct?'

Smiley said it was.

'Please do not lower your voice merely because I am a nun. We run a noisy house here and nobody is the less pious for it. You look pale. You have a flu?'

'No. No, I am well.'

'Then you are better off than Herr Glaser who has succumbed to a flu. Last year we had an Egyptian flu, the year before it was an Asian flu, but this year the malheur seems to be our own entirely. Does Herr Lachmann have documents, may I ask, which legitimize him for who he is?'

Smiley handed her a Swiss identity card.

'Come. Your hand is shaking. But you have no flu. "By occupation, professor," she read aloud. 'Herr Lachmann hides his light. He is Professor Lachmann. Of which subject is he professor, may one ask?'

'Of philology.'

'So. Philology. And Herr Glaser , what is his profession? He has never revealed it to me.'

'I understand he is in business,' Smiley said.

'A businessman who speaks perfect Russian. You also speak perfect Russian, Professor?'

'Alas, no.'

'But you are friends.' She handed back the identity card. 'A Swiss-Russian businessman and a modest professor of philology are friends. So. Let us hope the friendship is a fruitful one.'

'We are also neighbours,' Smiley said.

'We are all neighbours, Herr Lachmann. Have you met Alexandra before?'

'No.'

'Young girls are brought here in many capacities. We have god-children. We have wards. Nieces. Orphans. Cousins. Aunts, a few. A few sisters. And now a Professor. But you would be very surprised how few daughters there are in the world. What is the family relationship between Herr Glaser and Alexandra, for example?'