He took care of me, she thought as her mind returned to Barley for a moment.

She hurried towards the grey block that rose ahead of her. A clinic designed by Dante and built by Franz Kafka, she remembered. The staff go there to steal medicines and sell them on the black market; the doctors are all moonlighting to feed their families, she remembered. A place for the lowlife and riffraff of our empire, for the luckless proletariat with neither the influence nor connections of the few. The voice in her head had a rhythm that marched with her as she strode confidently through the double doors. A woman snapped at her, and Katya, rather than show her card, handed her a rouble. The lobby echoed like a swimming pool. Behind a marble counter, more women ignored everyone except one another. An old man in blue uniform sat dozing in a chair, his open eyes staring at a defunct television set. She strode past him and entered a corridor lined with patients' beds. Last time there had been no beds in the corridor. Perhaps they cleared them out to make room for someone important. An exhausted trainee was giving blood to an old woman, assisted by a nurse in open overalls and jeans. Nobody groaned, nobody complained. Nobody asked why they must die in a corridor. An illuminated sign gave the first letters of the word 'Emergency'. She followed it. Look as though you own the place, he had advised her the first time. And it had worked. It still did.

The waiting room was a discarded lecture hall lit like a night ward. On the platform, a matron with a saintly face sat at the head of a line of applicants as long as a retreating army. In the auditorium, the wretched of the earth growled and whispered in the twilight, nursed their children. Men with half-dressed injuries lay on benches. Drunks lolled and swore. The air stank of antiseptic, wine and old blood.

Ten minutes to wait. Yet again she found her mind slipping back to Barley. His straight familiar eyes, his air of hopeless valour. Why would I not give him my home telephone number? His hand on her arm as if it had been there for ever. 'You're what I came here for.' Selecting a broken bench near the rear door marked 'Lavatories', she sat and peered ahead of her. You can die there and nobody will ask your name, he had said. There is the door, there is the alcove for the cloakroom, she rehearsed. Then there are the lavatories. The telephone is in the cloakroom but it is never used because nobody knows it is there. Nobody can get through to the hospital on the open line, but this line was put in for a bigwig doctor who wanted to keep in touch with his private patients and his mistress, until he got himself transferred. Some idiot installed it out of sight behind a pillar. It's been there ever since.

How do you know about such places? she had asked him. This entrance, this wing, this telephone, sit down and wait. How do you know?

I walk, he had replied, and she had had a vision of him striding the Moscow streets without sleep, food or herself, walking. I am the wandering Gentile, he had told her. I walk to keep company with my mind, I drink to hide from it. When I walk, you are beside me; I can see your face at my shoulder.

He will walk until he falls, she thought. And I shall follow him.

On the bench beside her a peasant woman in a saffron headscarf had begun to pray in Ukrainian. She was holding a small icon in both hands and bowing her head over it, deeper each time, till she was prodding her hairless forehead with the tin frame. Her eyes grew bright and as they closed Katya saw tears come out from between the lids. In the blink of a star I shall look like you, she thought.

She remembered how he had told her about visiting a mortuary in Siberia, a factory for the dead, situated in one of the phantom cities where he worked. How the corpses came out of a chute and were passed round a carousel, male and female mixed, to be hosed and labelled and stripped of their gold by the old women of the night. Death is a secret like any other, he had told her; a secret is something that is revealed to one person at a time.

Why do you always try to educate me to the meaning of death? she had demanded of him, sickened. Because you have taught me how to live, he had replied.

The telephone is the safest in Russia, he had said. Even our lunatics in the security Organs would not think of tapping the unused telephone of an emergency hospital.

She remembered their last meeting in Moscow, in the deepest part of winter. He had picked up a slow train at a backwater station, a place with no name in the centre of nowhere. He had bought no ticket and travelled hard class, pushing ten roubles into the conductor's palm like everybody else. Our gallant competent Organs are so bourgeois these days they no longer know how to mix with the workers, he had said. She pictured him a waif in his thick underclothes, lying in semi-darkness on the top berth reserved for luggage, listening to the smokers' coughing and the grumble of the drunks, suffocating from the stink of humanity and the leaky water-heater while he stared at the appalling things he knew and never spoke of. What kind of hell must that be, she wondered, to be tormented by your own creations? To know that the absolute best you can do in your career is the absolute worst for mankind?

She saw herself waiting for him to arrive, bivouacked among the thousands of other waiting-wounded at the Kazansky railway station under the foul fluorescent lights. The train is delayed, is cancelled, is derailed, said the rumours. Heavy snowfalls all the way to Moscow. The train is arriving, it never started, I need never have bothered to tell so many lies. The station staff had poured formaldehyde into the lavatories and the whole concourse stank of it. She was wearing Volodya's fur hat because it hid more of her face. Her mohair scarf covered her chin, her sheepskin coat the rest of her. She had never known such desire for anyone. It was a heat and a hunger at once inside the fur.

When he stepped off the train and walked towards her through the slush, her body was stiff and embarrassed like a boy's. As she stood beside him in the crowded metro, she nearly screamed in the silence as he pressed against her. She had borrowed Alexandra's apartment. Alexandra had gone to the Ukraine with her husband. She unlocked the front door and made him go ahead. Sometimes he seemed not to know where he was or, after all her planning, not to care. Sometimes she was scared to touch him, he was too frail. But not today. Today she ran at him, grasped him with all her force, gathering him to her without skill or tenderness, punishing him for her months and nights of fruitless longing.

But he? He embraced her as her father used to, keeping his waist clear of her and his shoulders firm. And as she pulled away from him she knew that the time was past when he could bury his torment in her body.

You are the only religion I have, he whispered, kissing her brow with closed lips. Listen to me, Katya, while I tell you what I have decided to do.

The peasant woman was kneeling on the floor, loving her icon, pressing it to her breast and lips. Katya had to climb over her to reach the gangway. A pale young man in a leather jacket had sat himself at the end of the bench. He had one arm tucked into his shirt, so she supposed it was his wrist that was broken. His head had fallen forward and as she squeezed past him she noticed that his nose was broken, too, though healed.

The alcove was in darkness. A broken light bulb dangled uselessly. A massive wooden counter barred her way to the cloakroom. She tried to lift the flap but it was too heavy so shew riggled under it. She was standing among empty coat-racks and hangers and uncollected hats. The pillar was a metre across. A handwritten sign said NO CHANGE GIVEN and she read it by the light of an opening and closing door. The telephone was in its usual place on the other side, but when she placed herself before it she could hardly see it in the dark.

She stared at it, willing it to ring. Her panic was over. She was strong again. Where are you? she wondered. In one of your postal numbers, one of your blurs on the map? In Kazakhstan? In the Middle Volga? In the Urals? He visited all of them, she knew. In the old days she had been able to tell by his complexion when he had been working outdoors. At other times he looked as though he had been underground for months. Where are you with your dreadful guilt? she wondered. Where are you with your terrifying decision? In a dark place like this? In a small-town telegraph office that is open round the clock? She imagined him arrested, the way she sometimes dreamed of him, trussed and white in a hut, tied to a wooden horse, scarcely bucking any more as they went on beating him. The phone was ringing. She lifted the receiver and heard a flat voice.

'This is Pyotr,' he said, which was their code to protect each other - if I am in their hands, and they force me to call you, I shall tell them a different name so that you can hide.

'And this is Alina,' she replied, amazed that she could speak at all. After that she didn't care. He's alive. He hasn't been arrested. They are not beating him. They have not tied him to a wooden horse. She felt lazy and bored. He was alive, he was speaking to her. Facts, no emotion, his voice at first remote and only half familiar. Backwards and forwards, only facts. Do this. He said this. I said this. Tell him I thank him for coming to Moscow. Tell him he is behaving like a reasonable human being. I am well. How are you?

She rang off, too weak to talk any more. She returned to the lecture hall and sat on a bench with the rest of them, reaching for breath, knowing nobody would care.

The boy in the leather jacket was still lounging on the bench. She noticed his bent nose again, perfect yet off-true. She remembered Barley again and was grateful for his existence.

He lay on his bed in his shirt-sleeves. His bedroom was an airless box hacked from a grand bedchamber and filled with the water-chorus of every Russian hotel, the snuffle of the taps, the trickle of the cistern from the tiny bathroom, the gulping of the huge black radiator, the groan of the refrigerator as it flung itself upon a fresh cycle of convulsions. He was sipping whisky from a toothmug, pretending to read by the useless bedlight. The telephone lay at his elbow, and beside the telephone lay his notebook for messages and great thoughts. Phones can be alive whether or not they're on their cradles, Ned had warned him. Not this one, it isn't, thought Barley. This one's dead as a dodo till she rings. He was reading wonderful Marquez but the print was like barbed wire to him; he kept stumbling and having to go back.

A car went by in the street, then a pedestrian. Then it was the turn of the rain, cracking like tired shot against the window panes. Without a scream or a laugh or a cry of anger, Moscow had returned herself to the great spaces.