'You're sure of that?'

'You're thinking of the trolley? Which also disappeared in mid- April?'

'You're not bad,' Turner said. 'You're not bad at all.'

'And you would be making a most terrible mistake if you ever thought you were a specialist,' de Lisle retorted, with that same unpredictable force which Turner had discerned in him before. 'Just don't go thinking you're in a white coat, that's all; don't go thinking we're all laboratory specimens.' He swung violently to avoid a double lorry and at once a motorised scream of fury rose from behind them. 'I'm saving your soul though you may not notice it.' He smiled. 'Sorry.I've got Siebkron on my nerves, that's all.'

'He put P. in his diary,' Turner said suddenly. 'After Christmas: meet P. Give P. dinner. Then it faded out again. It could have been Praschko.'

'It could have been.'

'What Ministries are there in Bad Godesberg?'

'Buildings, Scientific, Health. Just those three so far as I know.'

'He went to a conference every Thursday afternoon. Which one would that be?'

De Lisle pulled up at the traffic lights and Karfeld frowned down on them like a cyclops, one eye ripped off by a dissenting hand.

'I don't think he did go to a conference,' de Lisle said cautiously. 'Not recently anyway.'

'What do you me an?'

'Just that.'

'For Christ's sake?' 'Who told you he went?'

'Meadowes. And Meadowes got it from Leo and Leo said it was a regular weekly meeting and cleared with Bradfield. Something to do with claims.'

'Oh my God,' said de Lisle softly. He pulled a way, holding the left-hand lane against the predatory flashing of a white Porsche.

'What does "Oh God" me an?'

'I don't know. Not what you think perhaps. There was no conference, not for Leo. Not in Bad Godesberg, not anywhere else; not on Thursdays, not on any other day. Until Rawley came, it's true, he attended a low-level conference at the Buildings Ministry. They discussed private contracts for repairing German houses damaged by Allied manoeuvres. Leo rubberstamped their proposals.'

'Until Bradfield came?'

'Yes.'

'Then what happened? The conference had run down, had it? Like the rest of his work.'

'More or less.'

Instead of turning right in to the Embassy gateway, de Lisle filtered to the left bay and prepared to make the circuit a second time.

'What do you me an? "More or less "?'

'Rawley put a stop to it.'

'To the conference?'

'I told you: it was mechanical. It could be done by correspondence.'

Turner was almost in despair. 'Why are you fencing with me? What's going on? Did he stop the conference or not? What part's he playing in this?'

'Take care,' de Lisle warned him, lifting one hand from the steering-wheel. 'Don't rush in. Rawley sent me instead of him. He didn't like the Embassy to be represented by someone like Leo.'

'Someone like -'

'By a temporary. That's all! By a temporary without full status. He felt it was wrong so he got me to go a long in his place. After that, Leo never spoke to me again. He thought I'd intrigued against him. Now that's enough. Don't ask me any more.' They were passing the Aral garage again, going north. The petrol attendant recognised the car and waved cheerfully to de Lisle. 'That's your mede or measure. I'm not going to discuss Bradfield with you if you bully me till you're blue in the face. He's my colleague, my superior and-'

'And your friend! Christ forgive me: who do you represent out here? Yourselves or the poor bloody taxpayer? I'll tell you who: the Club. Your Club. The bloody Foreign Office; and if you saw Rawley Bradfield standing on Westminster Bridge hawking his files for an extra pension, you'd bloody well look the other way.'

Turner was not shouting. It was rather the massive slowness of his speech which gave it urgency.

'You make me puke. All of you. The whole sodding circus. You didn't give a twopenny damn for Leo, any of you, while he was here. Common as dirt, wasn't he? No background, no childhood, no nothing. Shove him the other side of the river where he won't be noticed! Tuck him a way in the catacombs with the German staff! Worth a drink but not worth dinner! What happens now? He bolts, and he takes half your secrets with him for good measure, and suddenly you've got the guilts and you're blushing like a lot of virgins holding your hands over your fannies and not talking to strange men. Everybody: you, Meadowes, Bradfield. You know how he wormed his way in there, how he conned them all; how he stole and cheated. You know something else too: a friendship, a love affair, something that made him special for you, made him interesting. There's a whole world he lived in and none of you will put a name to it. What was it? Who was it? Where the hell did he go on Thursday afternoons if he didn't go to the Ministry? Who ran him? Who protected him? Who gave him his orders and his money and took his information off him? Who held his hand? He's a spy, for Christ's sake! He's put his hand in the till! And the moment you find out, you're all on his side!'

'No,' said de Lisle. They were pulling up at the gate; the police were converging on them, tapping on the window. He let them wait. 'You've got it wrong. You and Leo form a team of your own. You're the other side of the wire. Both of you. That's your problem. Whatever definitions, whatever labels. That's why you're beating the air.'

They entered the car park and de Lisle drove round to the canteen side where Turner had stood that morning, staring across the field.

'I've got to see his house,' Turner said. 'I've got to.' They were both looking a head of them, through the windscreen.

'I thought you'd ask me that.'

'All right, forget it.'

'Why should I? I've no doubt you'll go anyway. Sooner or later.'

They got out and walked slowly over the tarmac. The despatch riders were lying on the lawn, their motor-bikes stacked round the flagpole. The geraniums, martially arranged, glinted like tiny guardsmen a long the verges.

'He loved the Army,' de Lisle said, as they climbed the steps.

'He really loved it.'

As they paused to show their passes yet again to the weasel sergeant, Turner chanced to look back at the carriageway. 'Look!'he said suddenly. 'That's the pair that picked us up at the airport.'

A black Opel had lumbered in to the filter bay; two men sat in the front; from his vantage point on the steps, Turner could make out easily the multiple reflectors of the long driving mirror glittering in the sunlight.

'Ludwig Siebkron took us to lunch,' de Lisle said with a dry smile, 'and now he's brought us home. I told you: don't go thinking you're a specialist.'

'Then where were you on Friday night?'

'In the woodshed,' de Lisle snapped, 'waiting to murder Lady Ann for her priceless diamonds.'

The cypher room was open again. Cork lay on a truckle bed, a handbook on Caribbean bungalows lay beside him on the floor. On the desk in the dayroom was a blue Embassy envelope addressed to Alan Turner Esquire. His name was typewritten; the style was stiff and rather gauche. There were a number of things, the writer said, which Mr Turner might care to know about in connection with the matter which had brought him to Bonn. If it were convenient, the writer continued, he might care to call for a glass of sherry wine at the above address at half past six o'clock. The address was in Bad Godesberg and the writer was Miss Jenny Pargiter of Press and Information Section, presently on attachment to Chancery. She had signed her name and typed it beneath the signature for reasons of clarity; the P was written rather large, Turner decided; and as he opened the blue rexine diary he permitted himself a rare if puzzled smile of anticipation. P for Praschko; P for Pargiter. And P was the initial on the diary. Come on, Leo, let's have a look at your guilty secret.