But there were still ominous question marks hanging in the dark skies above us.

What had happened to the daylight?

Just where had the triffids come from so suddenly, and so murderously?

But as things fell out, I wouldn't have to wait long for some answers. That afternoon I received an urgent message to report to my airbase at once.

Little did I know that the short trip there was to be the first leg of the most remarkable journey of my life.

CHAPTER FIVE.

TO DARK SKIES.

BY three-thirty that afternoon the pace of events was hotting up.

A weather-beaten but mechanically sound staff car brought me back from the Mother House at Bytewater to my airbase on the other side of the island.

With the world still immersed in inky darkness floodlights blazed, illuminating the aircraft hangars and the runway.

I was greeted by the airbase commander's PA who told me to suit up immediately. I was to take up our only Panther jet fighter and determine just how far the cloud cover extended.

'Heard you were taken out by a seagull, Masen!' The cheery voice of 'Mitch' Mitchell greeted me the moment I stepped through the door into the locker room. He was a tiny man, yet had long wiry arms that sometimes earned him the extra sobriquet 'Monkey'. From a radio in the corner a selection of jaunty Noel Coward show songs rattled the windows. Island Radio was doing its bit to raise spirits. An ironic 'A Room with a View' was followed by a hastily composed pastiche called 'Don't Let's Be Beastly to the Triffid'.

Mitch Mitchell lobbed a biscuit at me, then returned to pouring boiling water into a teapot. 'This seagull, then. What was she toting? Thirty-millimetre cannon or air-to-air rockets?'

'Very funny, Mitch.'

'Much damage?'

'Smashed prop. She'll be airworthy by tomorrow.'

'So you get the hero's job, I hear?'

'I don't like the sound of that.'

'You'll be front-page news tomorrow, sunshine.'

'For all the right reasons, I hope.'

'The girls will be queuing, old cock.'

'You really think so?'

'Dead cert, mate. Then chocks away, open your throttle and you'll be into the wide blue yonder with more skirt than you can shake a stick at.'

'But heroes have a habit of winding up very dead, very quickly.'

It was our typical kind of banter. I'd gone through pilot school with Mitch, and by now we'd developed a kind of patois of our own that outsiders often found baffling. As we knocked one-liners back and forth like tennis players enjoying a sustained rally I changed into my pressure suit.

Made of vulcanized heavy-duty cotton with neoprene collar and cuffs it fitted as closely as a second skin. From the hip dangled a length of hose that would be connected to the aircraft's air supply.

'Any news on what's causing the blackout?' I asked.

'There've been bulletins on the radio, suggesting it's just a thick layer of cloud-'

'Heck of a thick layer.'

'Tea?'

'Thanks.'

'Only, if you ask me, David, this thing's got the boffins foxed. Which machine are you taking up?'

'The Panther.'

'Lucky devil; the gods are smiling on you, old son.'

'Let's hope so.' I finished pulling the heavy-duty zip across my chest.

Just then the commander's PA poked her head around the door.

'Are you decent?'

'As he'll ever be,' Mitch quipped.

'Change of plan,' she told me. 'The Old Man's ordered ground crew to pull out the Javelin.'

'The Javelin? That's a two-seater. What made him change his mind?'

'Don't ask me.' She flashed a cherry-red lipsticked smile. 'I only work here.'

'Maybe they want me to hold your hand, David.' Mitch grinned. 'I can shoo away all those big nasty birds that keep attacking you.'

'Maybe,' I agreed 'Perhaps you'd better suit up, too.'

'Wow, they're going to make me a hero as well,' he exclaimed. 'Those girls are gonna flock around me, just you wait and see, mate.' As he began to loosen his tie he called across to the pretty PA who was just leaving. 'Hey, gorgeous. I've got an idea: why don't I pick you up around eight tonight?'

'I've got a better idea.' She shot him a smile. 'Don't bother.'

Mitch shrugged, then winked at me. 'Well, she didn't exactly say no, did she?'

Mitch's efforts to wriggle into the pressure suit were wasted. When we presented ourselves at the Old Man's office it was to hear that I would be taking a passenger with me in the two-seater jet fighter.

By then it had started to rain. The sound of raindrops drumming on the corrugated-iron roof was somehow ominous.

Commander Reynolds, better known as the Old Man, was sixty-five if he was a day and so heavily jowled that he looked like an old bulldog just roused from a deep sleep.

'Masen,' growled the Old Man. 'This is Mr Hinkman.'

A bright-eyed young man standing by the desk bobbed his head and held out his hand. There was an eager air about him; he looked like a fresh-faced student who'd just been awarded his first assignment.

'Mr Hinkman is a meteorologist,' continued the Old Man in his characteristic slow growl. 'That means weather's his forte. He'll be taking the navigation seat.'

'Yessir,' I said, a little reluctantly. 'But can I ask if Mr Hinkman's had any experience of flying in a jet fighter?'

'Not that-'

Even though the eager young meteorologist had begun to speak the Old Man growled over the top of his reply. 'None, I dare say. Not that he needs it. He'll sit behind you in the cockpit, Masen. Make notes, photograph what needs photographing, that kind of thing.'

'Yessir.'

'Any questions?'

'No, sir... well, that is...'

'Yes, Masen?'

'Do we have any idea yet what's causing the darkness, sir?'

The rain drummed harder against the roof as the Old Man thoughtfully scratched one of his pendulous jowls. 'Personally I've never seen anything like it. Too dark for normal cloud; the closest I've come to this kind of blackout in daytime was in Suez. Damned sandstorm blew up so hard you couldn't see your hand in front of your face. Mr Hinkman?'

Mr Hinkman realized he was being invited to contribute to the discussion. Eagerly, eyes shining, he launched in. 'Commander Reynolds may have hit the nail on the head. The clouds we are familiar with in this part of the world are composed of water or ice particles that don't entirely obscure the light. However, sandstorms are composed of, ah, naturally enough, sand particles. These make a far better barrier against light, and quite literally block out the sun.'

The Old Man looked surprised. 'Sandstorms? On the Isle of Wight? Surely you're not serious!'

'Well, not sandstorms as such, Commander. But for daylight to be reduced by... well, ah, by one hundred per cent, then we're looking at a pretty unusual phenomenon.'

'And your job, Messrs Masen and Hinkman, is to solve this particular mystery.'

Hinkman had begun speaking again about airborne particles but the Old Man was peering gravely at his watch. 'Sixteen hundred hours. And if I'm not mistaken I can hear the engines of your aircraft. Godspeed, gentlemen.'

A man of few words, he shook Hinkman's hand, then mine. 'God-awful weather, Masen. I'm sorry to send you up in muck like this, but needs must and all that.'

Rain drummed against the roof and through the window I fancied I glimpsed a blue-white flicker of lightning.

Although those dark skies were far from friendly, I had an appointment with them that would not wait.

At a little after four-thirty we were ensconced in the cockpit as the jet plane sat on the runway waiting for take-off clearance from the control tower.

As I sat in the pilot's seat, Hinkman, sitting behind me, hardly paused for breath. Although he was similarly clad in helmet and flyer's pressure suit, which must have been strange to him, his chatter was fluent and rapid.

'There are ten principal cloud forms,' he said. 'From the nimbostratus that forms at a relatively low level up through to the high clouds of cirrus and cirrostratus and so forth that can exist at an altitude of 16,000 feet.'

I continued my pre-flight checks as he talked. Meanwhile the rain rattled fiercely against the perspex canopy of the jet. Already the odour of aviation fuel hung in the air. A distillation of triffid oil, it smelled sweet, like pears baking in a pie.

'I fully expect the obscuring layer of cloud will begin at low level,' Hinkman was saying. 'But as it is clearly the variety of cloud known as cumulonimbus that is producing this thunderstorm, it may well extend upwards to a height in excess of 20,000 feet.'

As if the elements wished to concur with the meteorologist's observation a fork of lightning tore across the sky. A moment later a peal of thunder buffeted the aircraft as it stood on the runway.

'Mr Masen?'

'Yes?'

'Our plan is elegant in its simplicity. You're to fly the plane up through the cloud until we reach unbroken sunlight so that we can determine the extent of the blackout layer.'

'I understand.'

'This aircraft can reach an altitude of twenty thousand feet?'

'It has a ceiling of about fifty thousand feet. Will that be high enough for you, Mr Hinkman?'

'Yes... yes, it will be.'

I now detected a certain falling-off in Hinkman's enthusiasm.

Another burst of lightning flooded the landscape with electric blue light. Trees, momentarily in silhouette, looked like great shaggy beasts massing for attack. A potent image. Chilling, too.

'Ah, Mr Masen...'

'David, please.'

'Oh, yes, quite, quite. Then please call me Seymour.'

'Yes, Seymour?'

'The thunderstorm, I can't help but noticing, seems rather severe.'

'It's a real humdinger, isn't it, Seymour?'

'Ah... yes.' I heard a pale imitation of a laugh in my earpiece. 'It is that, David. Uhm, I just wondered...'

'Yes?'

'Should we actually be flying in this weather?'

'As Commander Reynolds said: Needs must.'