Blodsoffer plot
As the endless summer holds Stockholm in its grip, another kind of darkness descends. The respectable, highly regarded detective Thomas Berg is confronted with a serial killer. The brutal murderer is targeting his colleagues, and Thomas takes a desperate gamble by enlisting the help of a once-respected but now-disgraced, misanthropic ex-detective: his estranged father, Alfred. If they are to protect their colleagues, they must set aside their differences and find a way to work together. Only then can they catch one of the worst murderers in Swedish history.