It would be useful to edge the revs up a couple of hundred while I was waiting but they might notice the gas-haze and it wasn't worth risking; the engine was at fair working temperature and there shouldn't be any flat-spot even under full gun. There was nothing coming up from in front of me on the other side. In the mirror the lights were green and I touched the gearshift into low and kept the clutch down. The only thing that worried me now was that it was beginning to look too easy.

They must have got their own engine running by now but that wouldn't help them: what they would need was a tank.

In the mirror the two leading cars were halfway down the empty stretch and closing on me fast from behind and it looked about right so I brought the revs up and the wheel hard round and put the 250 broadside on to the bunched traffic in a turn so tight that I felt the nearside front stub-axle hit the buffer even though the weight was shifting aft under the acceleration. The initial wheel-spin cost a little traction but the curve was under control and I cleared the two leading cars with enough to spare although of course they didn't like finding me broadside on across their bows without any warning and they were braking hard and hitting their horns as I straightened out of the U-turn and dragged at the gear-shift and headed for the lights with the power still piling on.

There was some noise behind me on the left as the bunch began shunting and breaking their rearlights but it wasn't my fault because continental drivers never leave enough room for their brakes and they're always leaving red glass on the roadway even when there isn't a 250 across their bows. But the noise wasn't serious so I knew that the Opel hadn't even tried. In any case they wouldn't have stood a chance of making the same U-turn after me because the first two cars had already passed them when I'd pulled out and they could only have rammed into the rest of the bunch and they didn't have a tank.

The start I had on them now wasn't much more than sixty seconds but it was the most these particular conditions could allow: the whole operation was controlled by the traffic lights and their time sequence and when they went red again the hundred-yard stretch would become empty and the Opel would have room to manoeuvre. The lights would have stopped my run and brought the sixty seconds' start to a grinding halt if it weren't for the side-street halfway between the lights and the restaurant, the one where a few cars had been turning out while I was waiting for the off.

I went into it just as the Opel got under way with a lot of tyre-squeal and came up the street in my direction. I didn't lift my foot to give them time to see me because it wasn't necessary: they knew I wouldn't head straight on for the lights — which were now red again — and there was nowhere else to go except into the side-street.

It took seven or eight minutes to lose them. It would have taken less than that to lose them entirely but I wasn't trying to do that: I had to stay near enough to find them again. There was a dodgy bit where someone had double-parked a yolk-yellow Volkswagen and I thought for a minute I was going to clip it but it was all right. The only risk was a one-way street which I had to take in the wrong direction but the single car I met there tucked in so fast to let me through that they must have thought they were going in the wrong direction instead of me.

The engine was smelling a shade hot by now because the acceleration needs had kept me in second gear all the time but the oracle had been worked quite nicely and I put her into third and slowed down for cruising as soon as we were back in the Wernerstrasse.

They were the third car ahead and I stayed where I was for the moment. They seemed to have lost a lot of their excitement but they wouldn't be giving up until they'd combed the area in the hope that I'd pulled into a good place to play possum. They were doing that now.

One of the cars between us peeled off into the Bahnhof and I slowed to let a bus go past. There was more traffic about because people were coming away from the restaurants and the early shows and this was a help. The bus was a hazard though and when it drew in at the next stop there was nothing to do but overtake and expose the image of the 250 SE.

The Opel wasn't ahead any more. It was nearly alongside and we were in a group at some lights. I didn't turn my head to look at them but I knew they were looking at me. They must have spotted me some way back and they'd known I'd have to overtake the bus before long so they'd slowed under its cover and waited till I had to come past.

I decided to call the whole thing off for the night. They knew what I'd been trying to do: flush and follow. They wouldn't let me do it again so I wasn't going to find where their boss was and ring up Ferris and tell him. All I could do now was to get clear and hole up in a different hotel: if I went back to the Carlsberg the people at the Bureau would have to get out the form and deal with it, the one that said next-of-kin unknown.

The lights went green and I found a gap and took it and fouled into the wrong lane and got away with it and started a series of feints through the streets at the back of the Bahnhof but this time they were breaking all the rules too and the Opel left the mirror only twice before it came back again and sat there weaving about on its springs.

Then I lost them in a full turn at a roundabout and gunned up and found a right-angle and went in fast with the mirror still clear but there was only one lamp in the street and when I nicked the heads on there was just time to hit the brakes. It was a cul-de-sac and the 250 finished up slewed sideways within a foot of a notice that said if I parked my Wagen there the Polizei would be informed immediately. I hoped they would hurry.

By the sound of things the Opel was overshooting and braking hard and backing up. My lights were out by now but the cul-de-sac grew bright suddenly and I turned my head and saw the passenger-side door of the Opel swing open as it pulled up.

They turned off their engine and it was very quiet except for their footsteps.

There was a blank wall at the end of the cul-de-sac and they'd left their headlights on to see with, so that their shadows were very big on the wall. They came side by side.

They didn't rush. They thought I might have a gun on me. They came slowly and once or twice halted, ready to drop fiat and fire from the ground. It looked a bit silly.

I sat where I was.

One idea would be to drop the gear into reverse and scatter them and try reaching the main street with the head well down and the fingers crossed. It was chancy because you can't dodge about when you're driving a car; you can only dodge the car about; they know where you are: stuck with the controls; and they only have to stand there and pump the stuff into you. No go.

The other ideas were worse so I sat there and worked up some anger about what they'd done to Lovett; anger is a prerequisite for action: it turns on the adrenalin.

I left my hands on the wheel for two reasons: I didn't want the indignity of having to put them there by order; and I wanted them there anyway so that they were free to do things quickly.

One of the men had fan-teeth which you normally associate with honest people of cheerful disposition but I didn't think this one was very honest and he didn't look cheerful. The other one smelt vaguely of almonds. They were both about my weight and I left my hands on the wheel while they frisked me and then one of them stood back a bit to keep me covered while his friend looked in the glove-pocket and under the seats and the dashboard. They spoke with a Luneburger accent. 'Where is your gun?' 'Please?'