Maria's friend Johnny asks for Maria's help with his great-aunt's death. While investigating the care home's questionable methods, Maria is drawn to Johnny.

To Maria's surprise, Koivu applies for a transfer. Susanna has been kidnapped. Maria suspects revenge. Ström wants to handle the negotiations with the kidnapper.

Maria Kallio investigates the death of a writer who lived a double life and rethinks her relationship with Koivu. Antti proposes to Maria. Susanna thinks she's being followed.

The murder of a local politician takes Maria into triangle drama. Maria thinks about her own traditional family choices. Maria is afraid of losing Koivu and is not ready for it.

Maria gets a new detective, Anu Wallin, on her team. Maria is jealous of Koivu. Stay-at-home dad Antti is satisfied with his life and Maria feels like an outsider everywhere.

Maria investigates the murder of a poisoned prostitute on live TV. During an arrest, Maria shoots the main perpetrator of a sex trafficking ring, who is also the murder suspect.

Maria investigates the murder of the chief geologist at a mining company opening event. Maria accepts a permanent position as the leader of the murder squad and moves to her cottage.

The preacher of a spiritual community is found dead and in order to solve the murder, Maria needs the help of Koivu’s new girlfriend, Anni, who works in the financial crimes unit.

Maria immerses herself in her work as she investigates the murder of a young girl from an immigrant family and tracks down a nationalist extremist group. Antti wants to move in with her.

A female pedophile released from prison is found dead and Maria traces a perp who is uploading photos and texts into a pedophile network.