Just as student party season gets into full swing, the police receive alarming reports of several deaths linked to a new chemical drug. The case lands on Nora’s desk and she meets new police officer Alexander.
Anna’s trail leads to the marina in Stavsnäs and Nora goes in search of Anna’s mysterious boyfriend. Alexander is informed that a young unconscious woman is being cared for at Södersjukhuset. Could it be Anna?
Sebastian, CEO of the family business Strömma Cement AB, goes behind the family’s back when he contacts real estate contractor Wilhelm Bauer in the hope of resolving his gambling debts. Meanwhile, Nora Bauer is looking into bookkeeping offenses.
Jonna is shaken by the latest developments and makes one bad decision after another. Alexander investigates the murder together with his new colleague Miriam, but also keeps up to date with Nora’s investigations.
Alexander and Miriam start a new murder investigation when a woman’s body is found in a fishing net. At the same time, Nora’s friend Kristina is looking forward to spending the summer at Sandhamn with her new love Anders, whom she met via a dating app.
Alexander and Miriam investigate Sara’s abandoned cottage. They also get access to Sara’s dating account and try to arrange a date with a guy of special interest. Anders goes home to confront his wife about the divorce.
The newly-appointed doctor Carl-Johan puts on a big house party, where his children try to keep their quarrels with each other under control to present a united facade. However, the party comes to an abrupt end when Nora’s daughter Anna witnesses a nasty event.
Carl-Johan’s children and wife are all suspected of the murder, but it is his youngest daughter Vicky who has been arrested. Meanwhile, Alexander is determined to find out what his missing wife has been up to all these years.