A jawbone is found in the middle of the forest. When the rest of the body is found, it turns out that it has just recently been moved and belongs to Viktor Eklund, who has been missing for five years.

A candidate for the Nobel Peace Prize is brutally stabbed to death in central Stockholm just after a meeting with two lawyers from the war tribunal in The Hague. One of the witnesses worked with Alex when she was in the Middle East.

During a police intervention, a macabre discovery is made in the trunk of a car. Josef and Oskar find themselves in the line of fire of a seemingly cold-blooded killer. But things are not what they seem.

A young gang member is found dead, and the Beck group's investigation indicates that a drug network is behind it. Klas Fredén has been monitoring the network for a long time, and the Beck group - led by Alex Beijer - is most graciously allowed to work with the murder investigation in parallel. She will soon end up on a collision course with Fredén. Thus, Martin Beck, who is now head of department, is also involved in the case.

In 1898, barely 18 years old, the German Hans Schomburgk, a native of Hamburg, set foot on the black continent for the first time. In 1912, he was admitted to the Royal Geographical Society in London and convinced a production company to finance his first film expedition to Africa. Two years later, the apprentice director achieved immense success with the documentary "Hiking and trails in Africa". Tested by the two world conflicts - the Allies confiscated his reels during the Great War, just like the Nazis, in 1940 - Hans Schomburgk managed to bounce back by setting out again to film the endangered wildlife of Kruger Park or the ancient traditions of the San, until to his farewell to Africa in 1956.