The probe into the disappearance of Benjamin continues; Iris and Jens successfully find new leads, despite Kerstin's refusal to keep pursuing the case.

Iris is back in Malmö and continues the Benjamin case investigation; Iris gets into a fight with Kattis and goes to a hotel to be alone, but the memories of Christian haunt her.

Iris is becoming increasingly frustrated with the lack of progress in Stockholm. At work, her co-operation with Kerstin is faltering and she is also annoyed that she is not left alone at home. Iris wants to continue investigating Benjamin's disappearance despite Kerstin's protests.

Iris refuses to let go of the Benjamin case and suddenly various pieces fall into place; when Kattis helps Iris learn the truth about Christian, the sisters re-evaluate their relationship.

Iris has become increasingly comfortable in Malmö and as Head of the Cold Case Unit. They have a new case on their hands: a body has been found buried outside Ystad near a manor house.

he new discovery in the forest marks the beginning of the end. Thorbjörn's wife Marianne disappears, but Iris finds her in time and gets her to start talking.

Iris finally gets hold of Adam in Spain. They have managed to arrest Van Voorst, but the only person he wants to talk to is Iris

Sara is found lifeless and rushed to the emergency room. Her brothers rush to the hospital, but their mother reacts very differently.