Their sudden flight had confused the pack of dogs. Even though he doubted whether they could get away, he knew they would have to try. He pulled Baiba after him down the stairs, elbowed aside a man who hadn't managed to get out of their way, and suddenly they found themselves in the clothing department. Sales assistants and customers stared at them in astonishment as they charged past. Wallander stumbled and fell into a rack of suits. As he pulled and grabbed at the suits, the rack overturned. When he fell, he'd landed on his injured hand and the pain shot through his arm like a knife. A security guard came running up and took hold of his arm, but Wallander had no inhibitions any longer. He punched the man in the face with his good hand, then pulled Baiba after him towards where he hoped there might be a back staircase or an emergency exit. The shadows were catching up, and making no attempt to conceal themselves now. Wallander was pushing and pulling at doors that refused to budge, but eventually came to one standing ajar. They emerged into a back staircase, but he could hear footsteps coming towards them from below: there was no choice but to head for the upper floor.

He flung open a fire door and they came out on to a roof covered with gravel. He looked round for an escape route, but they were trapped. The only way down from the roof was the long leap into eternity. He noticed he was holding Baiba's hand. There was nothing to do but wait. He knew that the colonel who would soon step out on to the roof would be the man who had murdered the major. The grey fire door would reveal the answer at last, and he realised bitterly that it no longer mattered whether he'd guessed right or not.

When the door opened and Colonel Putnis stepped out accompanied by a group of armed men, however, he was surprised even so to see that he had been wrong. Despite everything he had come to the conclusion that Murniers was the monster who had been lurking for so long in the shadows.

Putnis came towards them with a very serious expression on his face. Wallander could feel Baiba's nails digging into his hand. He can't very well order his men to shoot us here, Wallander thought desperately. Or maybe he can? He recalled the execution of Inese and her friends, and suddenly he could feel himself trembling, overcome by fear.

Then Putnis's face broke into a smile, and Wallander realised to his bewilderment that it wasn't an animal of prey standing before him and smiling, but a man displaying great friendliness.

"You don't need to look so perplexed, Mr Wallander. You seem to think I'm the one behind all this business. But I must say, you're a very difficult person to protect."

For one brief moment Wallander's mind stood still. Then he realised he'd been right after all, that it wasn't Putnis but Murniers who was the devil's henchman he'd been hunting for so long. He'd also been right in suspecting there was a third possibility, that the enemy also had an enemy. Everything fell into place. His judgement hadn't let him down, and he stretched out his left hand in order to greet Putnis.

"A somewhat unusual meeting place," Putnis said, "but you are obviously a man of surprises. I must admit that I wonder how you managed to get into the country without our border guards noticing."

"I hardly know myself," Wallander said. "It's a very long story."

Putnis seemed concerned about his injured hand. "You ought to get that treated as soon as possible," he said.

Wallander nodded, and smiled at Baiba. She was still tense and didn't seem to understand what was going on.

"Murniers," Wallander said. "So he was the one?"

Putnis nodded. "Major Liepa's suspicions were well founded."

"There's a lot I don't understand," Wallander said.

"Colonel Murniers is a very intelligent person," Putnis said. "Certainly, he's an evil man, but I'm afraid that only shows that sharp minds often have a tendency to be located in heads belonging to brutal people."

"Is that certain?" Baiba said suddenly. "That he was the one who killed my husband?"

"He wasn't the one who smashed his skull," Putnis said. "That is more likely to have been his faithful sergeant."

"My driver," Wallander said. "Sergeant Zids. The one who killed Inese and the others in the warehouse."

Putnis nodded. "Colonel Murniers has never liked the Latvian nation," he said. "Even though he played the part of a police officer who held the political world at a distance, as do all professionals, in his heart and soul he is a fanatical supporter of the old regime. As far as he's concerned, God will always be in the Kremlin. That was the guarantee for his being able to form an unholy alliance with various criminals without interference. When Major Liepa began to see through him, he set false trails implicating me. I have to admit it was a long time before I began to suspect what was happening. Then I decided I might as well continue pretending not to know what was going on."

"I still don't understand, though," Wallander said. "There must have been more to it than that. Major Liepa talked about a conspiracy, something that would make the whole of Europe realise what was happening in this country."

Putnis nodded sagely. "Of course there was more to it than that," he said. "Something much bigger than a high-ranking police officer being corrupt and protecting his privileges with as much brutality as was necessary. It was a devilish plot, and Major Liepa had realised that."

Wallander felt cold. He was still holding Baiba's hand.

Putnis's armed men had withdrawn and were standing by the fire door.

"It was all very cleverly worked out," Putnis said. "Murniers had an idea and succeeded in selling it to the Kremlin and the leading Russian circles in Latvia. He had seen the possibility of killing two birds with one stone."

"By using the new Europe, where the border controls no longer existed, in order to earn money from the organised smuggling of drugs," Wallander said. "Including Sweden. But at the same time, he also used the drug smuggling to discredit the Latvian national movements. Am I right?"

Putnis nodded. "I could see from the start that you were a good police officer, Inspector Wallander. Very analytical, very patient. That's exactly how Murniers had worked it out. The blame for the drug trafficking would be attached to the freedom movements here in Latvia, and in Sweden public opinion would be radically altered. Who would want to support a political freedom movement that thanked you for the support it was receiving by flooding your country with drugs? It can't be denied that Murniers had created a weapon that was both dangerous and cleverly devised, a weapon that could have smashed the freedom movement in this country once and for all."

Wallander thought about what Putnis had said.

"Do you understand?" he asked Baiba.

She nodded slowly.

"Where is Sergeant Zids?" he asked.

"As soon as I have the necessary proof, Murniers and Sergeant Zids will be arrested," said Putnis. "I have no doubt Murniers is feeling very worried just now. He probably hasn't realised that all the time we've been keeping watch on those of his men who've been keeping watch on-you.

Of course, you could criticise me for exposing you to unnecessary danger, but I assumed it was probably the only way of finding the papers Major Liepa must have left behind."

"When I left the university yesterday, Zids was lying in wait for me," said Baiba. "He told me that if I didn't hand over the papers, Upitis would die."

"Upitis is innocent, of course," Putnis said. "Murniers had taken his sister's two small children hostage, and told him they'd be killed unless Upitis confessed to being Major Liepa's murderer. There really is no limit to what Murniers is capable of doing. It will come as a relief to the whole country once he's been exposed for what he is, and condemned to death and executed, as will Sergeant Zids. The major's evidence will be published. The plot will be revealed, not just in the courts, but it will be circulated to the whole nation. I've no doubt it will also be of interest to people beyond our borders."