When his former drug dealer, Ramón, dies from an apparent overdose and Ramón's girlfriend, Jenny, disappears without a trace, Danny Katz suspects that something is amiss. He decides to investigate, enlisting the help of prosecutor Eva Westin to find the missing young woman. It isn't long before the line between Katz's current and former lives begins to blur, raising many questions about his own troubled youth. Katz's inquiries lead him to the darkest corners of Stockholm's black market, and he quickly finds his old addiction threatening to reassert its grip on his life. It also becomes clear that someone is willing to do whatever it takes to keep him from discovering the answers to his questions.

Joel, whose older brother was kidnapped years earlier, goes missing under suspicious circumstances. His frantic wife turns to Danny Katz --- an old friend with a troubled past --- for help. A brilliant computer programmer and recovering heroin addict, Katz is also the divorced father of two young girls. Before long, he discovers he isn't the only one trying to find Joel. The deeper Katz digs, the more upsetting the secrets he uncovers about the wealthy and powerful family at the heart of the investigation. Chillingly, the case takes a violent turn that reveals a disorienting connection to Katz's own troubled childhood.

Nella and her brother, Robert, live a difficult life with their mother and father in a small town on the west coast of Sweden. Robert is bullied at school, and Nella has to resort to debt and petty crime to pay off his tormentors. When she turns to her friend, Tommy, for help, her suspicions are aroused by the mysterious comings and goings of his brothers at their dilapidated boat house. But when she uncovers the reason behind their enigmatic behavior, her life is opened to the realities of a mind-boggling secret.