Back in the cool office, while they waited for the inevitable coffee, Kerim opened a cupboard in the wall and pulled out sets of engineers' blue overalls. Kerim stripped to his shorts and dressed himself in one of the suits and pulled on a pair of rubber boots. Bond picked out a suit and a pair of boots that more or less fitted him and put them on.

With the coffee, the head clerk brought in two powerful flashlights which he put on the desk.

When the clerk had left the room Kerim said, `He is one of my sons-the eldest one. The others in there are all my children. The chauffeur and the watchman are uncles of mine. Common blood is the best security. And this spice business is good cover for us all. M set me up in it. He spoke to friends of his in the City of London. I am now the leading spice merchant in Turkey. I have long ago repaid M the money that was lent me. My children are shareholders in the business. They have a good life. When there is secret work to be done and I need help, I choose the child who will be most suitable. They all have training in different secret things. They are clever and brave. Some have already killed for me. They would all die for me-and for M. I have taught them he is just below God.' Kerim made a deprecating wave. `But that is just to tell you that you are in good hands.' `I hadn't imagined anything different.'

`Ha!' said Kerim non-committally. He picked up the torches and handed one to Bond. `And now to work.'

Kerim walked over to the wide glass-fronted bookcase and put his hand behind it. There was a click and the bookcase rolled silently and easily along the wall to the left. Behind it was a small door, flush with the wall. Kerim pressed one side of the door and it swung inwards to reveal a dark tunnel with stone steps leading straight down. A dank smell, mixed with a faint zoo stench, came out into the room.

`You go first,' said Kerim. `Go down the steps to the bottom and wait. I must fix the door.'

Bond switched on his torch and stepped through the opening and went carefully down the stairs. The light of the torch showed fresh masonry, and, twenty feet below, a glimmer of water. When Bond got to the bottom he

found that the glimmer was a small stream running down a central gutter in the floor of an ancient stone-walled tunnel that sloped steeply up to the right. To the left, the tunnel went on downwards and would, he guessed, come out below the surface of the Golden Horn.

Out of range of Bond's light there was a steady, quiet, scuttling sound, and in the blackness hundreds of pinpoints of red light flickered and moved. It was the same uphill and downhill. Twenty yards away on either side, a thousand rats were looking at Bond. They were sniffing at his scent. Bond imagined the whiskers lifting slightly from their teeth. He had a quick moment of wondering what action they would take if his torch went out.

Kerim was suddenly beside him. `It is a long climb. A quarter of an hour. I hope you love animals.' Kerim's laugh boomed hugely away up the tunnel. The rats scuffled and stirred. `Unfortunately there is not much choice. Rats and bats. Squadrons of them, divisions-a whole air force and army. And we have to drive them in front of us. Towards the end of the climb it becomes quite congested. Let's get started. The air is good. It is dry underfoot on both sides of the stream. But in winter the floods come and then we have to use frogmen's suits. Keep your torch on my feet. If a bat gets in your hair, brush him off. It will not be often. Their radar is very good.'

They set off up the steep slope. The smell of the rats and of the droppings of bats was thick-a mixture of monkey house arid chicken battery. It occurred to Bond that it would be days before he got rid of it.

Clusters of bats hung like bunches of withered grapes from the roof and when, from time to time, either Kerim's head or Bond's brushed against them, they exploded twittering into the darkness. Ahead of them as they climbed there was the forest of squeaking, scuffling red pin-points that grew denser on both sides of the central gutter. Occasionally Kerim flashed his torch forward and the light shone on a grey field sown with glittering teeth and glinting whiskers. When this happened, an extra frenzy seized the rats, and those nearest jumped on the backs of the others to get away. All the while, fighting tumbling grey bodies came sweeping down the central gutter and, as the pressure of the mass higher up the tunnel grew heavier, the frothing rear-rank came closer.

The two men kept their torches levelled like guns on the rear ranks until, after a good quarter of an hour's climb, they reached their destination.

It was a deep alcove of newly faced brick in the side of the tunnel. There were two benches on each side of a thick tarpaulin-wrapped object that came down from the ceiling of the alcove.

They stepped inside. Another few yards' climb, Bond thought, and mass hysteria must have seized the distant thousands of rats further up the tunnel. The horde would have turned. Out of sheer pressure for space, the rats would have braved the lights and hurled themselves down on to the two intruders, in spite of the two glaring eyes and the threatening scent.

`Watch,' said Kerim.

There was a moment of silence. Further up the tunnel the squeaking had stopped, as if at a word of command. Then suddenly the tunnel was a foot deep in a great wave of hurtling, scrambling grey bodies as, with a continuous high-pitched squeal, the rats turned and pelted back down the slope.

For minutes the sleek grey river foamed by outside the alcove until at last the numbers thinned and only a trickle of sick or wounded rats came limping and probing their way down the tunnel floor.

The scream of the horde slowly vanished down towards the river, until there was silence except for the occasional twitter of a fleeing bat.

Kerim gave a non-committal grunt. `One of these days those rats will start dying. Then we shall have the plague in Istanbul again. Sometimes I feel guilty for not telling the authorities of this tunnel so that they can clean the place up. But I can't so long as the Russians are up here.' He jerked his head at the roof. He looked at his watch. `Five minutes to go. They will be pulling up their chairs and fiddling with their papers. There will be the three permanent men-M.G.B., or one of them may be from army intelligence, G.R.U. And there will probably be three others. Two came in a fortnight ago, one through Greece and another through Persia. Another one arrived on Monday. God knows who they are, or what they are here for. And sometimes the girl, Tatiana, comes in with a signal and goes out again. Let us hope we will see her today. You will be impressed. She is something.'

Kerim reached up and untied the tarpaulin cover and pulled it downwards. Bond understood. The cover protected the shining butt of a submarine periscope, fully withdrawn. The moisture glistened on the thick grease of the exposed bottom joint. Bond chuckled. `Where the hell did you get that from, Darko?'

`Turkish Navy. War surplus.' Kerim's voice did not invite further questions. `Now Q Branch in London is trying to fix some way of wiring the damn thing for sound. It's not going to be easy. The lens at the top of this is no bigger than a cigarette-lighter, end on. When I raise it, it comes up to floor level in their room. In the corner of the room where it comes up, we cut a small mousehole. We did it well. Once when I came to have a look, the first thing I saw was a big mousetrap with a piece of cheese on it. At least it looked big through the lens.' Kerim laughed briefly. `But there's not much room to fit a sen............