The whole team approached their task with enthusiasm. Bjork removed the lid of the box where generally he kept overtime locked away. He urged everybody on, reminding them again that not a word of their activities must leak out. Akeson had removed his jacket, loosened his tie which was usually so neatly knotted, and become one of the workers, even if he never let slip his authority as ultimate leader of the operation that was now getting under way.
But it was Wallander who called the shots; he could feel that, and it gave him frequent moments of deep satisfaction. Thanks to unexpected circumstances and the goodwill of his colleagues, which he scarcely deserved, he had been given an opportunity to atone for some of the guilt he felt after rejecting the confidence Sten Torstensson had shown in him by coming to Skagen and asking for his help. Leading the search for Sten's murderer and the murderer of his father was enabling Wallander to redeem himself. He had been so preoccupied with his own private woes that he had failed to hear Sten's cry for help, had not allowed it to penetrate the barricades he had built around his all-consuming depression.
He wrote another letter to Baiba that he never posted. In it he tried to explain to her, and hence also to himself, just what it meant, killing a man last year and now, adding to his guilt, rejecting Sten Torstensson's plea for help. The conclusion he seemed to reach, even though he doubted it deep down, was that Sten's death had started to trouble him more than the events of the previous year on the fog-bound training area, surrounded by invisible sheep.
But nothing of this was discernible to those around him. In the canteen his colleagues would comment in confidence that Wallander's return to duty and to health was as much a surprise as it would have been if he had taken up his bed and walked when he had been at his lowest. Martinsson, who was sometimes unable to hold his cynicism in check, said: "What Kurt needed was a challenging murder. Not some nervous, carelessly executed manslaughter committed on the spur of the moment. The dead solicitors, a mine in a garden and some Far Eastern explosive mixture in his petrol tank - that was just what he needed to bring him back to the fold."
The others agreed that there was more than a grain of truth in what Martinsson said.
It took them a week to complete the exhaustive survey of Harderberg's empire that would be the platform for the rest of the investigation. During that week neither Wallander nor any of his colleagues slept for more than five hours at a time. They would later look back at that period and conclude that a mouse really could roar if it had to. Even Akeson, who was rarely impressed by anything, had to doff his non-existent hat to what the team had achieved.
"Not a word of this must get out," he said to Wallander one evening when they had gone outside for a breath of fresh autumn air, trying to drive away their tiredness. Wallander did not at first understand what he meant.
"If this gets out, the Central Police Bureau and the Ministry of Justice will set up an inquiry that will eventually lead to something called the 'Ystad Model' being presented to the Swedish public: how to achieve outstanding results with minimal resources. We'll be used as proof that the Swedish police force is not undermanned at all. We'll be used as evidence to show that in fact there are too many police officers. So many that they keep getting in each other's way and that gives rise to a great waste of money and deteriorating clear-up rates."
"But we haven't achieved any results at all yet," Wallander said.
"I'm talking about the Central Police Bureau," Akeson said. "I'm talking about the mysterious world of politics. A world where masses of words are used to camouflage the fact that they're doing nothing but straining at a gnat and swallowing a camel. Where they go to bed every night and pray that the next day they'll be able to turn water into wine. I'm not talking about the fact that we haven't yet discovered who killed the two solicitors. I'm talking about the fact that we now know that Alfred Harderberg is not the model citizen, superior to all others, that we thought he was."
That was absolutely true. During that hectic week they had managed to build a bird's-eye view of Harderberg's empire that naturally was by no means comprehensive, but they could see that the gaps - indeed, the black holes - indicated quite clearly that the man who lived in Farnholm Castle should not be allowed out of their sight for one minute.
When Akeson and Wallander stood outside the police station that night, on November 14 to be exact, they had got far enough to be able to draw certain conclusions. The first phase was over, the beaters had done their work and the hunters could prepare to move in. Nothing had leaked out, and they had begun to discern the shape and nature of the leviathan in which Lars Borman and more especially Gustaf Torstensson must have discovered something it would have been safer for them not to have seen.
The question was: what?
It had been a hectic time, but Wallander had organised his troops well and had not hesitated to take on the most boring work himself - which often proved to produce the most interesting information. They had gone through the story of Harderberg's life, from the day he was born, the son of an alcoholic timber merchant in Vimmerby, when he was known as Hansson, to the present day when he was the driving force of an enterprise with a turnover of billions in Sweden and abroad. At one point during the laborious exercise, wading through company reports and accounts, tax returns and share brochures, Svedberg said: "It's simply not possible for a man who owns as much as this to be honest." In the end it was Sven Nyberg, the surly and irritable forensic specialist, who gave them the information they needed. As so often happens, it was pure coincidence that he stumbled upon the tiny crack in Harderberg's immaculately rendered wall, the barely visible fault they had craved. And if Wallander, despite his exhaustion, had not picked up on a remark Nyberg made as he was on his way out of Wallander's office late one night, the opportunity might have slipped away.
It was nearly midnight on Wednesday and Wallander was poring over a resume Hoglund had drawn up on Harderberg's worldly possessions when Nyberg belted on the door. Nyberg was not a discreet person; he stamped down corridors and he belted on doors, as if he were about to make an arrest, when he visited his fellow officers. That night he had just completed the forensic lab's preliminary report on the mine in Mrs Duner's garden and the blowing up of Wallander's car.
"I thought you would want the results right away," he said after flopping down on one of Wallander's visitors' chairs.
"What have you got?" Wallander said, peering at Nyberg with red-rimmed eyes.
"Nothing," Nyberg said.
"Nothing?"
"You heard." Nyberg was irritated. "That's also a result. It's not possible to say for certain where the mine was manufactured. We think it might be from a factory in Belgium, a company called Poudreris Reunie de Belgique or however you pronounce it. The explosive used suggests that. And we didn't find any splinters, which means that the force of the mine was upwards. That also suggests Belgian in origin. But it could also have been from somewhere else entirely. As for your car, we can't say definitely that there was explosive material in your petrol tank. In other words we can't say anything at all for sure. So the result is nothing."