The Locked Room by Maj Sjöwall, Per Wahlöö

in front of Gunvald Larsson. 'I intend to let him go,' he said. 'And I intend to have him shad¬owed. Can you get someone to shadow Roos, someone he won't recognize?'
    'Where's he got to be shadowed to? Honolulu? In that case I'll volunteer myself.'
    'I'm serious,' said Bulldozer.
    Gunvald Larsson sighed. 'I guess I'll have to arrange it,' he said. 'When's he to begin?'
    'Now,' said Bulldozer. 'I'll let Roos go at once. He's off duty until Thursday afternoon, and before then he'll have shown us where Malmström and Mohrén are hiding out, just so long as we don't let him out of our sight'
    'Thursday afternoon,' said Gunvald Larsson. 'Then we'll need at least two men who can relieve each other.'
    'And they'll have to be damned good at shadowing,' said Bulldozer. 'He mustn't notice anything, or all will be lost'
    'Give me fifteen minutes,' said Gunvald Larsson. 'I'll call you when it's all fixed.'
    When Werner Roos climbed into a cab on Kungsholmsgatan twenty minutes later, Detective Sergeant Rune Ek was sitting at the wheel of a grey Volvo.
    Rune Ek was a corpulent man in his fifties. He had white hair, glasses, and ulcers, and his doctor had just put him on a strict diet This was why he didn't get much out of the four hours he spent at a table for one in the Opera Cellar restaurant though Werner Roos and his red-haired lady friend apparently denied themselves nothing, whether dry or liquid, at their window table on the veranda.
    Ek passed the long, light summer night in an elder grove out at Hässelby, furtively watching the redhead's breasts, which were to be observed intermittently bobbing up and down on the waves of Lake Malaren, as Werner Roos, like a latter-day Tarzan, did the crawl.
    Later, as the morning sun shone down between the treetops, Ek continued this activity among some bushes outside a Hässelby bungalow. Having ascertained that the newly bathed couple were alone in the house, he devoted the following half hour to picking ticks out of his hair and clothes.
    When, some hours later, Rune Ek was relieved, Werner Roos still hadn't put in an appearance. As far as anyone could see, it might take several hours before he dragged himself out of the redhead's arms in order, it was to be hoped, to look up his friends Malmström and Mohrén.

14
    Anyone who had been in a position to compare the bank robbery squad to the robbers themselves would have found that in many ways they were evenly matched. The squad had enormous technical resources at its disposal, but its opponents possessed a large amount of working capital and also held the initiative.
    Very likely Malmström and Mohrén would have made good policemen if anyone could have induced them to devote themselves to so dubious a career. Their physical qualities were formidable, nor was there much wrong with their intelligence.
    Neither had ever occupied himself with anything except crime, and now, aged thirty-three and thirty-five respectively, they could rightly be described as able professional criminals. But since only a narrow group of citizens regarded the robbery business as respectable, they had adopted other professions on the side. On passports, driving licences, and other means of identification they described themselves as 'engineer' or 'executive', well-chosen labels in a country that literally swarms with engineers and executives. All their documents were made up in totally different names. The documents were forgeries, but with a particularly convincing appearance, both at first and second sight. Their passports, for
    example, had already passed a series of tests, both at Swedish and foreign border crossings.
    Personally, both Malmström and Mohrén seemed if possible even more trustworthy. They made a pleasant, straightforward impression and seemed healthy and vigorous. Four months of freedom had to some extent modified their appearance; both were now deeply tanned. Malmström had grown a beard, and Mohrén wore not only a moustache but also