Municipal commissioner Tore dies in a plane crash and leaves his wife Monica and children Lena and Klas behind. Through flashbacks by Monica we see how their married life was, with lots of up and downs.

A serial killer that decapitates people is on the loose in the Stockholm subway. Martin Beck and his colleagues try to catch the killer, while the panic in the city increases.

At 68 years old and due to the depression and anguish that partly come with being an old man in exile in Sweden, Igor and his memories will decide where to go next.

An elderly man walks through a city, trying to get home.

JW now lives in exile and is more than ever determined to find out what happened to his missing sister Camilla. Every trace leads him to the world of organized crime in Stockholm. Jorge is about to do his last score – the largest robbery in Swedish history. But during the complicated preparations he meets a woman from his past – Nadja. Martin Hägerström is chosen to go undercover into the Serbian mafia, in order to get its notorious boss Radovan Krajnic behind bars. When an assassination attempt is made on Radovan, his daughter Natalie is pulled into the power struggle within the Serbian mafia.