When Johanna's mother dies, she goes home to Hammarvik to arrange the funeral. In the city, they have found a car that belonged to Johanna's best friend Madelene, who took her life 18 years ago.

Elvis arranges an unexpected birthday surprise for Vanessa. Pernilla resumes her friendship with Johanna and invites her to dinner. Meanwhile, everyone is surprised by the result of the autopsy.

Carl makes a plan to get rid of his sister once and for all. Johanna digs further into the case of Minna Kopponen, and soon discovers that she had a secret relationship with someone in Hammarvik.

Vanessa goes to great lengths to get attention on social media, which worries Pernilla. Nettan discovers a corpse in the water, and the investigation takes a new turn.

André's sister Anastasia unexpectedly shows up in Hammarvik. New clues force Johanna to confront Pernilla, while Carl tries to convince her to sell the house.

Pernilla has returned home from her trip to Paris and wants to meet Danne, who has something to tell her. André can no longer stand Anastasia and their quarrel becomes more intense.

André has disappeared without a trace and now Johanna and Christian receive unexpected help from Nettan in the investigation. The questions pile up about who it really is behind all the murders in Hammarvik.