Floodgate

One

‘It is clear that it is the work of a madman.’ Jon de Jong, tall, lean, grey, ascetic and the general manager of Schiphol airport, looked and sounded very gloomy indeed and, in the circumstances, he had every justification in looking and sounding that way.

‘Insanity. A man has to be deranged, unhinged, to perform a wanton, mindless, pointless and purposeless task like this.’ Like the monkish professor he so closely resembled, de Jong tended to be precise to the point of pedantry and, as now, had a weakness for pompous tautology.

‘A lunatic.’

‘One sees your point of view,’ de Graaf said. Colonel van de Graaf, a remarkably broad man of medium height with a deeply trenched, tanned face, had about him an imperturbability and an unmistakable cast of authority that accorded well with the Chief of Police of a nation’s capital city. ‘I can understand and agree with it but only to a certain extent. I appreciate how you feel, my friend. Your beloved airport, one of the best in Europe — ‘

‘Amsterdam airport is the best in Europe.’ De Jong spoke as if by rote, his thoughts elsewhere. ‘Was.’

‘And will be again. The criminal responsible for this is, it is certain, not a man of a normal cast of mind. But that does not mean that he is instantly certifiable. Maybe he doesn’t like you, has a grudge against you. Maybe he’s an ex-employee fired by one of your departmental managers for what the manager regarded as a perfectly valid reason but a reason with which the disgruntled employee didn’t agree. Maybe he’s a citizen living close by, on the outskirts of Amsterdam, say, or between here and Aalsmeer, who finds the decibel level from the aircraft intolerably high. Maybe he’s a dedicated environmentalist who objects, in what must be a very violent fashion, to jet engines polluting the atmosphere, which they undoubtedly do. Our country, as you are well aware, has more than its fair share of dedicated environmentalists. Maybe he doesn’t like our Government’s policies.’ De Graaf ran a hand through his thick, iron-grey hair. ‘Maybe anything. But he could be as sane as either of us.’

‘Maybe you’d better have another look, Colonel,’ de Jong said. His hands were clenching and unclenching and he was shivering violently. Both of those were involuntary but for different reasons. The former accurately reflected an intense frustration and anger; the latter was due to the fact that, when an ice-cold wind blows east-north-east off the 1jsselmeer, and before that from Siberia, the roof of the main concourse of Schiphol airport was no place to be. ‘As sane as you or I? Would you or I have been responsible for this — this atrocity? Look, Colonel, just look.’ De Graaf looked. Had he been the airport manager, he reflected, it would hardly have been a sight to gladden his heart. Schiphol airport had just disappeared, its place taken by a wave-rippled lake that stretched almost as far as the eyes could see. The source of the flooding was all too easy to locate: close to the big fuel storage tanks just outwith the perimeter of the airport itself, a wide breach had appeared in the dyke of the canal to the south: the debris, stones and mud that were scattered along the top of the dyke on either side of the breach left no doubt that the rupture of the containing dyke had not been of a natural or spontaneous origin. The effect of the onrush of waters had been devastating. The airport buildings themselves, though flooded in the ground floors and basements, remained intact. The damage done to the sensitive electric and electronic machinery was very considerable and would almost certainly cost millions of guilders to replace but the structural integrity of the buildings was unaffected: Schiphol airport is very solidly built and securely anchored to its foundations.

Aircraft, unfortunately, when not operating in their natural element, are very delicate artifacts and, of course, have no means at all of anchoring themselves. A momentary screwing of de Graaf’s eyes showed that this was all too painfully evident. Small planes had drifted away to the north. Some were still floating aimlessly around. Some were known to be sunk and out of sight, and two had their tail-planes sticking up above the water — those would have been single-engined planes, carried down head-first by the weight of the engines in their noses. Some two-engined passenger jets, 737’s and DC9’s, and three engined planes, Trident 3’s and 727’s had also moved and were scattered randomly over a large area of the airfield, their noses pointing in every which direction. Two were tipped on their sides and two others were partially submerged, with only parts of their upper bodies showing: their undercarriages had collapsed. The big planes, the 747’s, the Tri-Stars, the DC 10’s, were still in situ, held in position by their sheer massive weight — these planes, fuelled, can weigh between three and four hundred tons. Two, however, had fallen over to one side, presumably because the undercarriages distant from the onrush of water had collapsed. One did not have to be an aeronautical engineer to realize that both planes were write-offs. Both port wings were angled upwards at an angle of about twenty degrees and only the roots of the starboard wings were visible, a position that could only have been accounted for by the fact that both wings must have broken upwards somewhere along their lengths.

Several hundred yards along a main runway an undercarriage projecting above the water showed where a Fokker Friendship, accelerating for take-off, had tried to escape the floodwaters and f”ed. It was possible that the pilot had not seen the approach of the flood waters, possible but unlikely: it was more likely that he had seen them, reckoned that he had nothing to lose either way, continued accelerating but failed to gain lift-off speed before being caught. There was no question of his plane having been engulfed: in those initial stages, according to observers, there had been only an inch or two of water fanning out over the airfield but that had been enough to make the Fokker aquaplane with disastrous results.

Airport cars and trucks had simply drowned under the water. The only remaining signs of any wheeled vehicles were the projecting three or four steps of aircraft boarding ramps and the top of a tanker: even the ends of two crocodile disembarkation tubes were dipped forlornly into the murky waters.

De Graaf sighed, shook his head and turned to de Jong who was gazing almost sightlessly over his devastated airfield as if still quite unable to comprehend the enormity of what had happened.

‘You have a point, Jon. You and I are sane, or at least I think the world at large would think so, and it is not possible that we could have been responsible for such appalling destruction. But that doesn’t mean that the criminal responsible for this wanton destruction is insane: we will doubtless find, either through our own efforts or because he chooses to inform us, that there was a very compelling reason for what he did. I shouldn’t have used the word “wanton” there, you shouldn’t have used words like “mindless” and “pointless”. This is no random, arbitrary, spur-of-the-moment act of an escaped mental patient: this is a deliberately calculated act designed to produce a deliberately calculated effect.’

Reluctantly, as if by a giant effort of will, de Jong looked away from the flooded airfield. ‘Effect? The only effect it has on me is one of sheer outrage. What other effects could there be? Do you have any suggestions?’

‘None. I’ve had no time to think about it. Don’t forget I’ve only just come to this. Sure, sure, we knew yesterday that this was promised, but like everyone else, I thought the idea was so preposterous as to be not worth considering. But I have two other suggestions. I suggest that we’ll achieve nothing by staring out over Lake Schiphol: and I suggest we’re not going to help anyone or anything by hanging around here and getting pneumonia.’ De Jong’s briefly pained expression showed what he thought of the term ‘Lake Schiphol’ but he made no comment.

The staff canteen was an improvement on the roof-top inasmuch as there was no wind but it wasn’t all that much warmer. All electric heating had inevitably been short-circuited and the butane heaters that had been brought in had as yet had a minimal effect on the chilled atmosphere. An abundance of hot coffee helped: something rather more sustaining, de Graaf reflected, would have been in order, but for those with a taste for schnapps or jonge jenever the presence of the airport manager had a markedly inhibiting effect. As became his ascetic appearance, de Jong was a lifelong teetotaller, a difficult thing to be in Holland. He never made a point of this, he had never even been heard to mention this, but, somehow, people just didn’t drink anything stronger than tea or coffee when de Jong was around.

De Graaf said: ‘Let’s summarize briefly what we know. It has to be brief because we know virtually damn all. Three identical messages were received yesterday afternoon, one to a newspaper, one to the airport authorities — in effect, Mr de Jong — and one to the Rijkswaterstaat of the Ministry of Transport and Public Works.’ He paused briefly and looked across at a burly, dark-bearded man who was placidly polluting the atmosphere with the smoke from what appeared to be a very ancient pipe. ‘Ah! Of course. Mr van der Kuur. The Rijkswaterstaat Deputy Projects Engineer. How long to clear up this mess?’

Van der Kuur removed his pipe. ‘We have already started. We seal off the breach in the canal with metal sheeting — a temporary measure only, of course, but sufficient. After that — well, we do have the best and biggest pumps in the world. A routine job.’

‘How long?’

‘Thirty-six hours. At the outside.’ There was something very reassuring about der Kuur’s calm and matter-of-fact approach. ‘Provided of course that we get a degree of co-operation from the tugboat men, barge men and private owners whose boats are at the moment resting on the mud at the bottom of the canal. The boats that settled on an even keel are no problem: those which have fallen over on their sides could well fill up. I suppose self-interest will ensure co-operation.’

De Graaf said: ‘Any loss of life in the canal? Or anybody hurt?’ ‘One of my inspectors reports a considerable degree of high blood pressure among the skippers and crews of the stranded craft. That apart, no one was harmed.’

‘Thank you. The messages came from a man or a group signing themselves FFF — it was not explained what those initials were meant to stand for. The intention, it was said, was to demonstrate that they could flood any part of our country whenever and wherever they wished by blowing up a strategically placed dyke and that accordingly they intended to give a small scale demonstration that would endanger no one and cause as little inconvenience as possible.’

‘As little inconvenience! Small scale.’ De Jong was back at his fist clenching. ‘I wonder what the devil they would regard as a large scale demonstration?’

De Graaf nodded. ‘Quite. They said the target was Schiphol and that the flooding would come at ix a.m. Not one minute before eleven, not one minute after. As we know, the breach was blown at precisely i i a.m. At police headquarters, quite frankly, this was regarded as a hoax — after all, who in his right mind would want to turn Schiphol airport into an inland sea? Perhaps they saw some symbolic significance in their choice — after all, the Dutch navy defeated the Spanish navy at this very spot when the present Schiphol really was a sea. Hoax or not, we took no chances. The canal was the obvious choice for any saboteur so we had both sides of the north bank of the canal closely examined. There were no signs of any kind of disturbance that could have indicated a preparation for the blowing of the dyke. So we assumed it was some kind of practical joke.’ De Graaf shrugged, palms uplifted. ‘As we know too late nothing was further from the mind or minds of the FFF than fun and games.’ He turned to the man seated on his left side. ‘Peter, you’ve had time to think. Have you any idea — sorry, gentlemen, sorry. Some of you may not know my colleague here. Lieutenant Peter van Effen. Lieutenant van Effen is my senior detective lieutenant. He is also an explosives expert and, for his sins, the head of the city’s bomb disposal squad. Have you figured out yet how it was done?’

Peter van Effen was an unremarkable figure. Like his boss, he was just over medium height, uncommonly broad and looked suspiciously as if he were running to fat. He was in his mid or late thirties, had thick dark hair, a dark moustache and an almost permanent expression of amiability. He didn’t look like a senior detective lieutenant, in fact he didn’t even look like a policeman. Many people, including quite a number of people in Dutch prisons, tended to take van Effen’s easy-going affability at its face value.

‘It didn’t take much figuring, sir. Anything’s easy with hindsight. But even had we had foresight there was nothing we could have done about it anyway. We’ll almost certainly find that two boats were tied up bow to stem alongside the north bank. Unusual, but there’s no law, say, against an engine breakdown and a sympathetic owner of a passing vessel stopping to lend a hand. I should imagine that we’ll find that those boats were almost certainly stolen because there is traffic on the canal and any habitual waterway user would have been able to identify them. ‘The two boats would have been very close or even overlapping, leaving a clear, hidden area where scuba divers could; took place during dusk or night-time, as I’m sure it did, they would have bright lights on deck and when you have those on, anything below gunwale level is in deep shadow. They would have had a drilling machine, something like the ones you use on oil-rigs only, of course, this one would have been on a very small scale and operated horizontally not vertically. It would have been electrically powered, either by batteries or a generator, because the exhausts of a petrol or diesel plant make a great deal of noise. For an expert, and there are literally hundreds of experts operating on or around the North Sea, this would have been a childishly simple operation. They would drill through to, say, a foot of the other side of the dyke — we may be sure they would have taken very careful measurements beforehand — withdraw the bit and insert a waterproof canvas tube packed with explosives, maybe just plain old-fashioned dynamite or TNT, although a real expert would have gone for amatol beehives. They would then attach an electrical timing device, nothing elaborate, an old-fashioned kitchen alarm clock will do very well, plug the hole with mud and gravel — not that there would be a chance in a million of anyone ever looking there — and sail away.’

‘I could almost believe, Mr van Effen, that you masterminded this operation yourself,’ van der Kuur said. ‘So that’s how it was done.’ ‘It’s how I would have done it and within the limits of a slight variation that’s how they did it. There is no other way.’ Van Effen looked at de Grad. ‘We’re up against a team of experts and the person directing them is no clown. They know how to steal boats, they know how to handle them, they know where to steal drilling equipment, they know how to use that equipment and they’re obviously at home with explosives. No wild-eyed, slogan-chanting cranks among this lot: they’re professionals. I’ve asked head office to notify us immediately if they receive any complaints from factories, wholesalers or retailers of the theft of any equipment from the manufacturers or distributors of drilling equipment. Also to notify us of the theft of any vessels from that area.’ ‘And beyond that?’ de Graaf said.

‘Nothing. We have no leads.’

De Graaf nodded and looked down at the paper he held in his hands. ‘That message from the mysterious FFF. No indication whatsoever as to the reason behind this threatened — now actual — sabotage. just a warning that nobody should be at ground level at i x a.m. this morning and that all planes should be flown out yesterday afternoon or evening to adjacent airfields as the needless destruction of property formed no part of their plans. Very considerate of them, I must say. And even more considerate, Jon, was the phone call you got at nine o’clock this morning urging you to evacuate all those planes immediately. But, of course, we all knew it was a hoax, so we paid no attention. Would you recognize that voice again, Jon?’

‘Not a chance-. It was a woman’s voice, a young woman and speaking in English. All young women speaking English sound the same to me.’ Fist clenched, de Jong gently thumped the table before him. ‘They don’t even hint at the reason for carrying out this — this monstrous action. What have they achieved by this action? Nothing. Absolutely nothing. I repeat that any person or persons who behave in this fashion have to be mentally unbalanced.’

Van Effen said: ‘I’m sorry, sir, I disagree. I do agree with what the Colonel said on the roof — they’re almost certainly as sane as any one. No one who is mentally unbalanced could have carried out this operation. And they’re not, as I said, wild-eyed terrorists throwing bombs in crowded market-places. In two separate warnings they did their best to ensure that neither human lives nor property would be put at risk. That was not the behaviour of irresponsible people.’

‘And who, then, was responsible for the deaths of the three people who lost their lives when that Fokker Friendship cartwheeled and crashed on take-off?’

‘The saboteurs, indirectly. One could equally well say that you were, also indirectly. It might be argued you might at least have considered the possibility that the threat was not a hoax, taken even the most remote possibility into account and refused permission for the Fokker to take off at exactly i i a.m. But that permission was given, personally I understand, by you. It is as certain as certain can be that the saboteurs had carefully checked landing and take-off schedules and made sure that there were no planes either taking off or landing at or near that time. That Fokker was the private plane of a German industrialist and was therefore not listed on the scheduled departures. I suggest, Mr de Jong, that it’s futile to ascribe the blame for those three deaths to anyone. Sheer bad luck, an unfortunate coincidence in timing, an act of God, call it what you like. There was nothing planned, nothing calculated, no motive behind those deaths. It was nobody’s fault.’ De Jong had substituted finger-drumming for table thumping. ‘If those evil men were as considerate as you say, why didn’t they postpone the explosion when they saw people boarding the plane?’ ‘Because we don’t know that they were in a position to see anything and, even if they were, they were almost certainly unable to do anything about it. Had the explosives been activated by a radio-controlled device, sure, they could have stopped it. But, as I told you, I’m pretty certain it was an electrical timer and to deactivate that they would have had to assemble a boat, scuba gear and diver — and all in broad daylight — in a matter of minutes. In the time available, that would have been impossible.’ There was a faint but unmistakable sheen of sweat on de Jong’s forehead. ‘They could have phoned a warning.’

Van Effen looked at de Jong for a long moment, then said: ‘How much attention did you pay to the previous warning this morning?’ De Jong made no reply.

‘And you’ve just said that the saboteurs have achieved nothing, absolutely nothing, by their action. I know you’re upset, sir, and it seems unfair to press the point, but can you really be so naive as to believe that? They’ve already made a considerable achievement. They have achieved the beginnings of a climate of fear and uncertainty, a climate that can only worsen with the passing of the hours. If they’ve struck once, apparently without a blind bit of motivation, are the chances not high that they win strike again? If they do, when? If they do, where? And, above 0, there’s the why. What overpowering reason do they have to behave as they do?’He looked at de Graaf. ‘Soften up the victim but keep him in suspense as to your purpose in behaving in this fashion. It’s a novel form of blackmail and I see no reason why it shouldn’t work. I have the strong feeling that we are going to hear from the FFF in the very near future. Not to state the reasons for acting as they do, certainly not to make any specific demands. Dear me, no. Not that. That’s not the way you conduct psychological warfare. One turns the wheel that stretches the rack very, very slowly over a calculated period of time. Gives the victim time to ponder more deeply about the hopelessness of his situation while his morale sinks lower and lower. At least that’s how I believe they operated in the Middle Ages — when using the actual instrument, of course.’ De Jong said sourly: ‘You seem to know a lot about the workings of the criminal mind.’

‘A little.’ van Effen smiled agreeably. ‘I wouldn’t presume to tell you how to run an airport.’

‘And what am I to understand from that?’

‘Mr van Effen just means that a cobbler should stick to his last.’ De Graaf made a placatory gesture with his hand. ‘He’s the author of the now established text-book on the psychology of the criminal mind. Never read it myself. So, Peter. You seem sure the FFF will contact us very soon, but not to tell us about themselves or their objectives. Tell us what? The where and the when their next — ah — demonstration?’ ‘What else?’

A profound and rather gloomy silence was ended by the entrance of a waiter who approached. de Jong. ‘Telephone, sir. Is there a Lieutenant van Effen here?’

‘Me.’ Van Effen followed the waiter from the canteen and returned within a minute and addressed himself to de Graaf.

‘Duty sergeant. Apparently two men reported their boats missing some hours ago. Pleasure boat owners. The sergeant who took their complaint didn’t think it necessary to notify our department. Quite right, of course. The boats have now been recovered. One, it would seem, was taken by force. The boats are in our hands. I told them to take a couple of finger-print men aboard, return the boats to the owners but not to allow the owners aboard. If you can spare the time, sir, we can interview the two owners after we leave here: they live less than a kilometre from here.’

‘A promising lead, yes?’

‘No.’

‘I don’t think so either. However, no stone unturned. We may as well go now and — ‘

He broke off as the same waiter reappeared and approached him. ‘Phone again. For you this time, Colonel.’

De Graaf returned in a matter of seconds. ‘Jon, have you such a thing as a shorthand typist?’

‘Of course. Jan?’

‘Sir?’ A blond youngster was on his feet.

‘You heard the Colonel?’

‘Yes, sir.’ He looked at de Graaf. ‘What shall I say?’ ‘Ask her to take that phone call and type it out for me. Peter, you have clairvoyance, the second sight.’

‘The FFF?’

‘Indeed. The press, I need hardly say. The FFF have their publicity priorities right. Usual anonymous phone call. The sub-editor who took the call was smart enough to tape-record it but I’d be surprised if that is of the slightest help. A fairly lengthy statement, I understand. Shorthand is not my forte. Let us possess our souls in patience.’ They had possessed their souls for not more than four minutes when a girl entered and handed a type-written sheet to de Graaf. He thanked her, looked briefly at the sheet and said: ‘Action this day would appear to be their motto. This, I understand, is their statement in full and a fairly arrogant example of its kind it is, too. This is what the FFF says:

“‘Next time, perhaps, the responsible citizens in Amsterdam will listen to what we say, believe what we say and act accordingly. It is because you did not believe what we said that a misadventure occurred today. For this misadventure we hold Mr de Jong entirely responsible. He was given due warning and chose to ignore that warning. We deplore the unnecessary deaths of the three passengers aboard the Fokker Friendship but disclaim all responsibility. It was not possible for us to arrest the explosion.”’ De Graaf paused and looked at van Effen. ‘Interesting?’

‘Very. So they had an observer. We’ll never find him. He could have been in the airport but hundreds of people who don’t work here visit here every day. For all we know, there could have been someone outside the airport with a pair of binoculars. But that’s not what is interesting. The four first-aid men who brought in the most seriously injured passengers did not know at the time whether the three men who were later pronounced dead were, in fact, dead or alive. Two of them, I understand, died after admission, but none was officially pronounced dead until the doctor certified them as such. How did the FFF know? Neither the doctor nor the first-aid men could have been responsible for leaking the news for they would be the obvious suspects and all too easily checked on. Apart from them, the only people who knew of those deaths arc in this room.’ Van Effen looked leisurely around the sixteen men and three women seated at the canteen tables then turned to de Jong.

‘It hardly needs spelling out, does it, sir? We have an infiltrator here, an informant. The enemy has a spy in our camp. Again he carried out the same slow survey of the room. ‘I do wonder who it can be.’ ‘In this room?’ De Jong looked both disbelieving and unhappy at the same time.

‘I don’t have to repeat the obvious, do I?’

De Jong looked down at his hands which were now tightly clasped on the table. ‘No. No. Of course not. But, surely, well, we can find out. You can find out.’

‘The usual rigorous enquiries, is that it? Trace the movements of every person in this room after the Fokker crashed? Find out if anyone had access to the phone or, indeed, used a phone? Sure, we can do that, pursue the rigorous enquiries. We’ll find nothing.’

‘You’ll find nothing?’ De Jong looked his perplexity. ‘How can you be so sure, so sure in advance?’

‘Because,’ de Graaf said, ‘the Lieutenant has a policeman’s mind. Not a bunch to be underestimated, are they, Peter?’

‘They’re clever.’

De Jong looked from de Graaf to van Effen then back to de Graaf. ‘If someone would kindly explain.

‘Simple, really,’de Graaf said. ‘It hasn’t occurred to you that the FFF didn’t have to let us know that they knew of the deaths. Gratuitous information, if you like. They would know that we would know this. They would know, as the Lieutenant has just pointed out, that we would know that someone had informed them and that someone would have to be one of us. They would be certain that we would check on the possibility of someone here having made a phone call, so they made certain that no one here made a phone call. He passed the word on to an accomplice who is not in this room: the accomplice made the call. I’m afraid, Jon, that you have another mole burrowing away inside here. Maybe even more. You are aware, of course, that every word of our conversation will be reported back to the FFF, whoever they may be. We will, naturally, go through the motions and make the necessary routine enquiries. As van Effen says, we will, of course, draw a blank.’

‘But — but it all seems so pointless,’ de Jong said. ‘Why should they be so devious so as to achieve nothing?’

‘They’re not really devious and they do achieve something. A degree of demoralization, for one thing. More important, they are saying that they are a force to be reckoned with, that they can infiltrate and penetrate security when they so choose. They are giving the message that they are a highly organized group, one that is capable of carrying out any threats that it chooses to make and one that is to be ignored at our peril. ‘Speaking of threats and perils, let’s return to the FFF’s latest phone call. They go on to say: “We are sure that the Dutch people are well aware that, in the face of an attacker determined to bring it to its knees, it is the most defenceless nation in the world. The sea is not your enemy. We are, and the sea is our ally.

“‘You will not need reminding that the Netherlands has about 1300 kilometres of sea dykes. A certain Cornelius Rijpma, president of the Sea Polder board in Leeuwarden, in Friesland, is on record as saying some months ago that the dykes in his area consist of nothing more than layers of sand and that if a big storm comes they are certain to break. By a ‘big storm’, one would assume that it would have to be a storm of the order of the one that breached the delta defences in 1953 and took 1,850 lives. Our information, supplied to us by the Rijkswaterstaat, is that — ‘

‘What! What’ Van der Kuur, red-faced and almost incoherent with anger, was on his feet. ‘Are those devils daring to suggest that they got information from us? Dastardly! Impossible!’

‘Let me finish, Mr van der Kuur. Can’t you see that they’re using the same technique again, trying to undermine confidence and demoralize? just because we know that they have contacts with one or more of Mr de Jong’s staff is no proof that they have any with your people. Anyway, there’s worse to come. They go on: “Our information is that a storm of not more than 70 % of the power of the 1953 one would be sufficient to breach the dykes. Mr Rijpma was talking about vulnerable dykes. Of the Netherlands’ 1300 kilometres of dykes, almost exactly three hundred have deteriorated to a critical condition. By the best estimates, no repairs will be carried out to the threatened dykes for another twelve years, that is to say, 1995. All we propose to do is to accelerate the advent of the inevitable.”’

De Graaf paused and looked around. A chilled hush seemed to have fallen over the canteen. Only two people were looking at him: the others were either gazing at the floor or into the far distance; in both cases it was not difficult to guess that they didn’t like what they saw. “‘The dykes cannot be repaired because there is no money to repair them. All the money available, or likely to be available in the future, is being sunk or will be sunk into the construction of the East Scheldt storm-surge barrier, the last link in the so-called Delta plan designed to keep the North Sea at bay. The costs are staggering. Due to gross original underestimates, cost over-runs and inflation, the likely bill will probably be in excess of nine billion guilders — and this massive sum for a project that some engineering experts say will not work anyway. The project consists of 63 lock-gates fitted between enormous, i 8,000 tonne, free-standing concrete pillars. The dissident experts fear that heavy seas could shift the pillars, jam the locks and render the barrier inoperable. A shift of two centimetres would be enough. Ask Mr van der Kuur of the Rijkswaterstaat.’”

De Graaf paused and looked up. Van der Kuur was on his feet again, every bit as apoplectic as on the previous occasion: the thought was inevitable that van der Kuur’s normal air of pipe-puffing imperturbability was a very thin veneer indeed.

‘Lies!’ he shouted. ‘Rubbish! Balderdash! Defamation! Calumny! Lies, I tell you, lies!’

‘You’re the engineer in charge. You should know. So, really, there’s no need to get so worked up about it.’ De Graaf’s tone was mild, conciliatory. ‘The dissidents the FFF speak about — they have no hydraulic engineering qualifications?

‘The dissidents! A handful. Qualifications? Of course. Paper qualifications! Not one of them has any practical experience as far as this matter is concerned.’

Van Effen said: ‘Does anybody have on this project? Practical experience, I mean. I understood that the East Scheidt involved completely untested engineering techniques and that you are, in effect, moving into the realms of the unknown.’ He raised a hand as van der Kuur was about to rise again. ‘Sorry. This is all really irrelevant. What is relevant is that there is a mind or minds among the FFF that is not only highly intelligent but has a clear understanding about the application of practical psychology. First, they introduce the elements of doubt, dismay, dissension and the erosion of confidence into Schiphol. Then they apply the same techniques to the Rijkswaterstaat. And now, through the medium of every paper in the land, this evening or tomorrow morning, and doubtless, through television and radio, they will introduce those same elements into the nation at large. If you ask me, they have — or will have — achieved a very great deal in a very short space of time. A remarkable feat. They are to be respected as strategists if not as human beings. I trust that the traitor in our midst will report that back to them.’

‘Indeed,’ de Graaf said. ‘And I trust the same traitor will understand if we don’t discuss the steps we plan to undertake to combat this menace. Well, ladies and gentlemen, to the final paragraph of their message and incidentally, no doubt, to introduce some more of what the Lieutenant referred to as doubt, dismay, dissension, erosion of confidence or whatever. They go on to say: “In order to demonstrate your helplessness and our ability to strike at will wherever and whenever we choose, we would advise you that a breach will be made in the Texel sea dyke at 4.30 P.M. this afternoon.”’

‘What!’ The word came simultaneously from at least half a dozen people. ‘Shook me a bit, too,’ de Graaf said. ‘That’s what they say. I don’t for a moment doubt them. Brinkman’- this to a uniformed young police officer — ‘contact the office. No urgency, probably, but check that people on the island know what’s coming to them. Mr van der Kuur, I’m sure I can leave it to you to have the necessary men and equipment to stand by.’ He consulted the sheet again. ‘Not a big operation, they say. “We are sure that damage will be minimal but it might behove the citizens of Oosterend and De Waal to stand by their boats or take to their attics shortly after 4.30. Very shortly.” Damned arrogance. They end up by saying: “We know that those names will give you a fairly accurate idea as to where the charges have been placed. We defy you to find them.”’

‘And that’s all?’ van der Kuur said.

‘That’s all.’

‘No reasons, no explanations for those damned outrages? No demands? Nothing?’

‘Nothing.’

‘I still say we’re up against a bunch of raving maniacs.’ ‘And I say that we’re up against clever and very calculating criminals who are more than content to let us stew in our own juice for the time being. I wouldn’t worry about the demands, if I were you. These will come in due time — their time. Well, nothing more we can achieve here — not, on reflection, that we have achieved anything. I bid you good day, Mr de Jong, and hope that you’ll be back in operational services some time tomorrow. It’ll take days, I suppose, to replace the machinery ruined in your basements.’

On their way out, van Effen made a gesture to de Graaf to hold back. He looked casually around to make sure that no one was within earshot and said: ‘I’d like to put tails on a couple of gentlemen who were in that room.’

‘Well, you don’t waste time, I will say. You have, of course, your reasons.’

I was watching them when you broke the news of the proposed Texel breach. It hit them. Most of them just stared away into space and those who didn’t were studying the floor. AU of them, I assume, were considering the awful implications. Two did neither. They just kept on looking at you. Maybe they didn’t react because it didn’t come as any news to them.’ ‘Straws. You’re just clutching at straws.’

‘Isn’t that what a drowning man is supposed to do?’

‘With all the water that’s around, present and promised, you might have picked a less painful metaphor. Who?’

‘Alfred van Rees.’

‘Ah. The Rijkswaterstaat’s Locks, Weirs and Sluices man. Preposterous. Friend of mine. Honest as the day’s long.’

‘Maybe the Mr Hyde in him doesn’t come out until after sunset. And Fred Klassen.’

‘Klassen! Schiphol’s security chief. Preposterous.’ ‘That’s twice. Or is he a friend of yours, too?’

‘Impossible. Twenty years’ unblemished service. The security chief?’ ‘If you were a criminal and were given the choice of subverting any one man in a big organization, who would you go for?’

De Graaf looked at him for a long moment, then walked on in silence.