The shotgun bucked in his hands, threw him back, but he scarcely noticed the recoil. He didn't want to see, wished that he had missed, maybe fired a warning shot over the other's head but it was too late for recriminations. Concentrated balled shot at a range of three yards disintegrated Gwyther's head, put a gaping bloody hole where the face had been, embedded bone splinters in the barn door directly behind him, sprayed ribbons of flesh up the stonework so that it dripped grey matter like an old man's phlegm, pink with blood from a diseased lung.

The pitchfork clattered to the ground, the hairy body swayed but still remained standing, tottering in defiance, nerves still working. Quinn smelied the powdersmoke, coughed. Drop, you bastard, for Christ's sake drop!

The bloodied morass which had once been Bill Gwyther's features still had an expression if you stared at it long enough. A jagged hole, twisted into a snarl of fury. You haven't finished with me yet, boy. A gaping orifice spouting crimson hate, eyebrows twitching, arms jerking like a hen's wings preparatory to a clumsy attempted flight.

I'm coming to get you, boy!

Jon flung up the gun, remembered it was empty. Two spent cases still trickling smoke up the tubes. A roaring in his ears, mocking laughter. Bare calloused feet with blackened broken toenail claws moved one more pace. A pace nearer.

Backing away, screaming something because he couldn't hold it back; fear, an apology, I didn't want to kill you, Mister Gwyther.

You haven't killed me yet, boy.

And then Gwyther fell, arms outstretched as though he was making one last despairing lunge at the one who had done this to him, spraying blood from where his mouth should have been, falling full-length and sending up a cloud of dust out of a dried-up puddle.

Jon Quinn just stood there looking down at him. He wanted to laugh, to cry, both at the same time but he did neither. Seconds that might have been hours then he was walking towards the Land Rover, climbing in and putting the gun in the back.

The engine fired first time but he never thought it would do otherwise because it was still warm. A U-turn that took him back out through the gateway and on to the road, reminding himself that he had to park on that slope, facing downwards, so that he could jump-start the Land Rover tomorrow. Some strange protective brain mechanism had pushed the bloody killing to the back of his mind.

Otherwise he might have gone mad.

PROFESSOR REITZE irritated the Prime Minister; he irritated the other senior cabinet ministers. In fact he irritated everybody in the top security shelter in the Hertfordshire countryside. But that was his prerogative for without his awareness, his knowledge of the perils of germ warfare, there was a possibility that the entire population of Western Europe would have been wiped out. It was he who had alerted them to the danger, recognised what was in the atmosphere.

Close-cropped hair, it was difficult to judge what colour it was, an inch of growth would have been necessary to be sure. Rimless glasses that gave the impression of owlish eyes in that angular face. Always the white smock, you didn't even know what he wore beneath it or whether he wore anything at all. Characterless, even his American accent was lost in his dull monotone voice. The perfect scientist, a human machine.

He sat at his low desk, blinked in the brightness of the strip lighting, thumbed through sheafs of typewritten paper and made occasional notes in his sprawling handwriting on a jotter pad. The glass ashtray by his elbow was piled with Camel stubs, the fingers of his right hand stained brown, the one indication that the man was actually human, he did have a vice.

The Prime Minister took a deep breath, let it out slowly. Anxiety, exasperation. He had said repeatedly that 'we must remain calm1 but there was a limit. And Reitze went beyond that limit.

Caldecott was in his fourth year of office. Next year he had to face an election; he had considered calling one earlier before inflation and unemployment figures began soaring again but now all that was forgotten. There might well never be another government or even a next year. In his early forties, he had a deceptive boyish appearance, one that a lot of people had underestimated, including the Opposition. Forceful, disliked in many quarters, he was finding it difficult to curb his impatience with Reitze. He glanced across at Rankine, the Defence Minister, read exasperation there, too. But both of them knew the Professor well enough not to try to hassle him.

The reports are still coming in.' Reitze leaned back in his chair, shook another Camel out of a crumpled pack, flicked his lighter. 'We are now beginning to form an overall picture of what has happened both in the United States and the European countries.' Slow expressionless tones, he might have been discussing the latest trade figures. He drew on his cigarette, scribbled something else on his pad. 'The timing of the release of these microorganisms into the atmosphere was meticulously synchronised so that all major areas of population in America were struck simultaneously with the UK. Of course, it was easier to conduct an intensive attack upon Britain than a vast area such as the United States.'

'Which means that we've suffered a far higher casualty rate,' Caldecott cut in.

'Proportionally.' Reitze did not alter his tone. 'But it will be weeks before any true figure can be arrived at. Communications have now broken down in most areas. Fortunately we still have a direct line to the White House, but they can only supply us with the information that reaches them.'

'What type of germ is it?' Rankine asked. 'What are the long-term effects likely to be?'

'At the moment our laboratory is working the clock round to come up with the answer,' Reitze replied, 'We know that the micro-organisms released into the atmosphere are mutants, possibly the results of years of research and experimentation. They affect the skin, adulterate the pigmentation, cause it to become hard and coarse and promote a hair growth which can only be compared with

the growth-rate of certain subtropical plants, growing as much as an inch in twenty-four hours. The brain is also attacked, reducing it only to basic thinking, the victim relying almost solely on instinct, much the same as an animal, perhaps slightly more advanced, the equivalent of primitive Man.'

'In effect,' Caldecott's voice was hushed, a frightened whisper, 'the majority of the' population of the western world have become . . . throwbacks'.

'That's it, in layman's terms.' The Professor crushed the remains of his cigarette in the ashtray. 'Man has been reduced to a primitive being. Of course, there will be individual reactions, some will be affected worse than others and vice versa. Some will escape for a variety of reasons. Micro-organisms do not have the resilience of radiation in the atmosphere. Filters in fall-out shelters will be more effective against them but unfortunately there was no chance to issue a warning. Germ warfare is far more insidious than nuclear warfare; you can't hear it, smell it or see it, and before you know it, it's got you.'

'Is there ... no chance, whatever, for the victims?' The Prime Minister asked the question which none of his ministers had dared to voice so far. Perhaps it was better not to know, just to hope.

'I can't answer that at this moment in time,' Reitze answered, and for once those eyes behind the rimless lenses flickered uncertainly, perhaps nervously. 'At the moment my team of scientists is trying to isolate the microorganisms. There may be several, but until they are isolated and we know exactly what they are, we don't know if anything can be done. Certainly the atmosphere is now clear. We do not know whether the victims will die in a short period or whether they will live a normal life-span.' 'And the whole world suffers because of Lebanon and Syria.' Rankine spoke bitterly, showed his personal feelings for the first time. 'Damn the Russians, they've threatened us with nuclear war for three decades and it was all a blind. Missile bases and counter missile bases, protests on Greenham Common and a lot of other places, and all the time we never guessed where the real danger lay. Now it's too late. They haven't even had to raze the western world to the ground! They can just walk in and take over whenever they like and we can't do a damned thing to stop 'em.'