'Is there a Chlestakov on the Diplomatic List?'

'No, I invented that part of my story for Trent. But this one was a KGB man – expensive clothes but no rings. Did you ever notice the way those KGB people never buy rings in the West? Rings leave marks on the fingers that might have to be explained when they are called back home, you see.'

'But you said that in the club members' book they are all described as Hungarians. Are you sure they are Russians?'

'They didn't do a Cossack dance or play balalaikas,' I said, 'but that's only because they didn't think of it. This fat little guy Chlestakov – a phoney name, of course – was calling Trent "tovarisch". Tovarisch! Jesus, I haven't heard anyone say that since the TV reruns of those old Garbo films.'

Bret Rensselaer took off his glasses and fiddled with them. 'The Russian guy said, "This is just a crazy idea that comes into my head. Take everything down to the photocopying shop in Baker Street…"?'

I finished it for him: ' "… the same place you got the previous lot done." Yes, that's what he said, Bret.'

'He must be crazy saying that in a place where he could be overheard.'

'That's it, Bret,' I said, trying not to be too sarcastic. 'Like the man said, he's a KGB man who acts upon a crazy idea as soon as it comes into his head.'

Bret was toying with his spectacles as if encountering the technology of the hinge for the first time. 'What's eating you?' he said without looking up at me.

'Come on, Bret,' I said. 'Did you ever hear of a Russian making a snap decision about anything? Did you ever hear of a KGB man acting on a crazy idea that just came into his head?'

Bret smiled uneasily but didn't answer.

'All the KGB people I ever encounter have certain well-engrained Russian characteristics, Bret. They are very slow, very devious and very very thorough.'

Bret put his wire-frame glasses into their case and leaned back to take a good look at me. 'You want to tell me what the hell you're getting at?'

'They did everything except sing the "Internationale", Bret,' I said. 'And it wasn't Trent who did anything indiscreet. He played it close to the chest. It was the KGB man who came on like he was auditioning for Chekhov.'

'You're not telling me that these three guys were just pretending to be Russians?'

'No,' I said. 'My imagination doesn't stretch to the idea of anybody who is not Russian wishing to be mistaken for a Russian.'

'So you think these guys staged the whole thing for your benefit? You think they just did it to discredit Giles Trent?'

I didn't answer.

'So why the hell would Giles Trent confess when you confronted him?' said Bret, rubbing salt into it.

'I don't know,' I admitted.

'Just four beats to the bar, feller. Okay? Don't get too complicated. Save all that for Coordination. Those guys get paid to fit the loose ends together.'

'Sure,' I said. 'But meanwhile we'd better send someone along to turn Trent 's place over. Not just a quick glance under the bed and a flashlight to see around the attic. A proper search.'

'Agreed. Tell my secretary to do the paperwork and I'll get it signed. Meanwhile assign someone to it – someone you can rely on. And by the way, Bernard, it's beginning to look as though we might have to ask you to go to Berlin after all.'

'I'm not sure I could do that, Bret,' I said with matching charm.

'It's your decision,' he said, and smiled to show how friendly he could be. Most of the time he was Mr Nice Guy. He opened doors for you, stood back to let you into the lift, laughed at your jokes, agreed with your conclusions, and asked your advice. But when all the pleasantries were over he made sure you did exactly what he wanted.

I was still thinking about Bret Rensselaer when I finished work that evening. He was different from any of the other Department heads I had to deal with. Despite those moments of brash hostility, he was more approachable than the D-G and more reliable than Dicky Cruyer. And Bret had that sort of laidback self-confidence that you have to be both rich and American to possess. He was the only one to defy the Departmental tradition that only the D-G could have a really big car, while the rest of the senior staff managed with Jaguars, Mercedes and Volvos. Bret had a bloody great Bentley limousine and a full-time uniformed chauffeur to go with it.

I saw Bret's gleaming black Bentley in the garage when I got out of the lift in the basement. The interior lights were on and I could hear Mozart from the stereo. Bret's driver was sitting in the back seat tapping his cigarette ash into a paper bag and swaying in time to the music.

The driver, Albert Bingham, was a sixty-year-old ex-Scots Guardsman whose enforced silence while driving resulted in a compulsive garrulity when off duty. 'Hello, Mr Samson,' he called to me. 'Am I parked in the way?'

'No,' I said. But Albert was out of his car and all ready for one of his chats.

'I wondered if you would be taking your wife's car,' he said. 'But on the other hand I guessed she'd be coming back here to collect it herself. I know how much she likes driving that Porsche, Mr Samson. We were having a chat about it only last week. I told her I could have it tuned up by a fellow I know at the place I get the Bentley serviced. He's a wizard, and he has a Porsche himself. A secondhand one, of course, not the latest model like that one of your wife's.'

'I'm going home in this elderly Ford,' I said, tapping the glass of it with my keys.

'I hear you're getting a Volvo,' he said. 'Just the right car for a family man.'

'We're too squeezed in my wife's Porsche,' I said.

'You'll be pleased with the Volvo,' said Albert in that tone of voice that marks the Bentley driver. 'It's a solid car, as good as the Mercedes any day, and you can quote me on that.'

'I might quote you on that,' I said, 'if I ever try trading it in for a Mercedes.'

Albert smiled and took a puff at his cigarette. He knew when he was being joshed and he knew how to show me he didn't mind. 'Your wife wanted to drive Mr Rensselaer in her Porsche, but he insisted on the Bentley. He doesn't like fast sports cars, Mr Rensselaer. He likes to be able to stretch his legs out. He was injured in the war – did you know he was injured?'

I wondered what Albert could be talking about. Fiona had arranged to go to Tessa's and sort through some house agents' offers. 'Injured? I didn't know.'

'He was in submarines. He broke his kneecap falling down a companionway – that's a sort of ladder on a ship – and it was reset while they were at sea. A sub doesn't return from patrol for a little matter of an ensign hurting his leg.' Albert laughed at the irony of it all.

Where had Rensselaer gone with my wife? 'So you nearly got an evening off, Albert.'

Gratified to see I hadn't climbed into the driving seat and fled from him, as most of the staff did when he started chatting, Albert took a deep breath and said, 'I don't mind, Mr Samson. I can use the overtime, to tell you the honest truth. And what do I care whether I'm sitting at home in my poky little bed-sitter or lying back in that real leather. It's Mozart, Mr Samson, and I'd just as soon listen to Mozart here in an underground garage as anywhere in the world. That stereo is a beautiful job. Come over and listen to it if you don't believe me.'

They couldn't have gone far, or Albert would not have brought the Bentley back to the garage to wait for them. 'Much traffic in town tonight, Albert? I have to go through the West End.'

'It's terrible, Mr Samson. One of these days, it's going to lock up solid.' This was one of Albert's standard phrases; he said it automatically while he worked out an answer to my question. 'Piccadilly is bad at this time. It's the theatres.'