Two patrolling cops stumble on to three criminals who have just stolen large amounts of explosives, and are killed in cold blood. Martin Beck and his team must now work day and night to find out who the killers are and what they are planning to do with the explosives before it's too late. Meanwhile, Gunvald Larsson who was a close friend of one of the murdered cops is ignoring all rules in his quest for revenge.
A man is found dead, stabbed to death with a knife. The chocking thing is that his face has been removed. After questioning his wife who described the marriage as happy also told that a mysterious foreign man knocked on their door the day before the murder. Beck and his men are given the case.
Martin Beck, Gunvald Larsson and Alice Levander investigate the mysterious murder of an accountant that was found shot to death at the airport parking. At the same time a reporter receives a package from an anonymous source, with information regarding the embezzling of funds that should have been used for fixing up nuclear reactors. When the reporter contacts Beck, his home gets blown up by a bomb.
A man is raping women after having met them through ads on public noticeboards. At first this seems like an easy crime to solve for Martin Beck and his colleagues but they soon discover that somebody's motivations are far more complex.