Kurt Wallander and the other police officers try to find the connection between a horrible murder that took place in Ystad and the kidnapping of one of the police force's daughters. It also seems someone has infiltrated the police and controls every move the police make.

The long-standing friendship between Finn and Jacob is wearing thin, and when Finn squanders both their fortunes on yet another financial scam, Jacob has had enough. He leaves his friend, plunging Finn into a deep personal crisis. By chance, they are reunited in Sweden, where Jacob has made a new life for himself. The pair try to patch things up, but it turns out that they both have hidden agendas.

A behind-the-scenes documentary about the Christmas calendar 'Mysteriet på Greveholm', a very technically advanced TV production for its time.