'Certainly not!' Lowson's eyes blazed and his beard bristled. 'I am here for a specific purpose. This expedition is in the interests of the public. I have a job to do and I intend to do it no matter what. I don't give a damn for space monsters or whatever you call them!'

'You're a bloody fool,' Harborne snarled, 'like all these other idiots who've moved in today. You're just asking to get yourself killed I could get an order to move you but why the hell should I? I've got enough to do as it is without worrying about you lot.'

With that he stormed off back across the saltings followed by the silent Detective-Inspector Borg. Lowson stood in the doorway and watched until they were mere dots along the sea-wall.

He knocked the ash out of his pipe and went back indoors. Damn them. Damn them .all! He would still capture the Slime Beast, no matter what

It was just after three o'clock when Gavin and Liz returned. Their growing tenseness had been eased by temporary jubilation at the successful purchase of a flame-gun.

'Even if it did take us six shops to find one, we got it in the end,' Liz joked as they approached the blockhouse,

Gavin was carrying their latest weapon in the war against the Slime Beast wrapped up in brown paper.

'Better not let your uncle see this,' he murmured, 'the old devil's up to something himself, I'm sure. He didn't spend all night out on the salt-marshes for nothing.

They went inside. The place was empty. Even the tobacco smoke filling the Professor's compartment was stale.

'He's gone off somewhere,' Liz muttered, 'been gone an hour or two by the staleness of this pipe smoke.'

'Well in that case,' said Gavin, wrapping their parcel inside a bundle of blankets, 'I'm going to take a quick dekko inside his quarters.'

'It seems a bit sly.'

'To hell with that! No doubts he's been poking through our stuff while we've been out. In fact I'm sure of it. Come on!'

Professor Lowson's concrete cubicle was a mass of papers and books. Sheets and sheets of foolscap were covered with his sprawling handwriting, but Gavin gave them scarcely a glance. He would not be able to decipher them anyway. In fact he did not know what he was looking for until he found it, and even then it was some seconds before he recognised the object.

'Why, it's a big square of fishing-net!' he exclaimed after he had unravelled the bundle which they had found beneath a couple of packing-cases. 'Now just look at these. Tied on all four corners. Grappling hooks. What the devil's he up to?'

'He's going to try and catch the Slime Beast alive with it!'

'Christ Almighty!' Realisation dawned on Gavin. 'So that's why he was out half the night. Crazy, but it might just work.'

Suddenly a shadow filled the small doorway. They whirled round in alarm.

'Hah!' There was triumph and sarcasm in Professor Lowson's voice. 'So you have decided to rifle my belongings eh?'

Gavin decided that the best form of defence was attack.

'Now let's get this straight Professor,' he snapped as Liz began to blush with guilt 'As members of your expedition, supposedly to locate King John's treasure, we've a right to know what's going on. You seem to have forgotten all about our original reason for coming here. You're obsessed with this Slime Beast Hoping to catch it alive with your net, eh? Like a minnow in a rock pool. You must be stark raving mad. This place is crawling with monster-hunters. The army has moved into Sutton, and set up defences in the middle of the village street, all loaded up with armour-piercing shells, grenades and the lot. What chance do you think you stand with a bloody fishing net?'

That,' replied Lowson thrusting his face close to Gavin's, 'is my affair. You wouldn't co-operate with me in the beginning so from now onwards we'll work separately. The police were here earlier, suggesting we packed up and got out. I told 'em what they could do. It might not be a bad idea if the pair of you opted out though. The law doesn't want you, and I certainly don't If you want to stay then keep out of my way! '

'We will, don't worry,' Gavin snarled, motioning Liz to follow him. 'If that's how you want it Prof, from now on it's every man for himself. And we're staying!'

The inhabitants of Sutton had overcome their fear with the coming of the army, and the terrors of the previous night were almost forgotten with the excitement of having a tank stationed in the car-park of The Bull. The sight of the heavy artillery, a crate of Mills bombs and a few .303 rifles soon restored their confidence. The beast from the marshes was as good as dead!

'I wouldn't be too sure,' said Tom Southgate, making the most of his popularity in his crowded bar. 'This ain't no ordinary beast. Armour-piercing shells won't make any difference to it. You mark my words. I fired half of a box of BB cartridges at it last night. Every one was on target, full in the face, from no more'n twenty yards, and it never even blinked!'

The evening wore on. Scant attention was paid to the portable television set until ten o'clock. Then as the news came on everybody surged forward. They gazed open-mouthed at the picture of the very pub in which they now stood and fell silent as the newscaster's voice came over the air.

'A strange beast is believed to be on the prowl on the marshes of the Wash in the area of Sutton village. Two killings, previously believed to have been the work of a homicidal maniac are now attributed to this creature from the deep. In the early hours of this morning several villagers opened fire from their bedroom windows on what appeared to be a lizard but having marked human features. The beast killed an Alsatian dog and then escaped apparently unhurt, surviving a number of point-blank shotgun blasts. An army defence post has now been set up in the village anticipating a return of this monster. Gerald Watson. News at Ten. Sutton, Lincolnshire.'

A buzz of conversation broke out again in the bar-room and Tom Southgate switched off the set This was great. The longer the creature delayed its reappearance, the better. He made a mental note to telephone the brewery in the morning to ask for an extra delivery of bitter. This business could go on for a very long time.

Soon after dark Gavin and Liz heard Professor Lowson go out. They had not spoken to him since their earlier defiant exchange, and the tension which had built up since seemed to ease with his departure.

'Why don't we follow him?' Liz asked as they heard his footsteps dying away.

'No point,' Gavin replied, pulling on a thick polo-necked sweater. 'He's got no more idea of where to find the Slime Beast than we have. If he had he'd either have got himself killed last night or else brought it in alive. I reckon our best bet is to hide up somewhere down by the big creek where it flows out into the mud-flats. That's where we saw the thing walk off into the sea, and it's as good a place to start as any.'

Carefully he unwrapped the flame-gun and made sure it was in working order. Then he fetched a can of paraffin from the hall and filled the container.

'Seems just the job,' he murmured. 'You know Liz, I'd feel much happier if you stopped here until I get back. If this thing doesn't work or doesn't keep the Slime Beast off...'

'Just suppose the Slime Beast comes here while you're down by the big creek,' she countered, 'and finds me all on my own.'

'You win,' he sighed. 'Maybe, though, we just ought to leave it all to the army... and the Professor.'

But she did not reply and five minutes later they pulled the door shut behind them and set off into the night Once again the moon was sufficiently full to bathe the saltings in its silvery glow and enable them to see their way with ease. There was no sign of any fog. Instead a fresh sea-breeze blew into their faces, the salt making their lips smart