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.

Maria investigates the murder of a dead skating coach and has to think about what kind of world she will raise her child in. Taskinen has a sixties crisis and wants to get the murder team involved in a dance challenge.

Maria Kallio returns to work as head of the murder squad after short maternity leave. She wants to be a loving mother and a good police officer but can't be in two places at the same time.

The brutal murder of Antti's research colleague makes Maria realize that the target of the murder was Antti. Does Maria have time to catch the killer before the killer gets their revenge?

Maria investigates an execution and has to step into an undercover role and to weigh her loyalty. She says yes to Antti's proposal. But is it already too late?

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.

Maria Kallio accepts a temporary position as the leader of the Länsi-Uusimaa Police murder squad. The first murder investigation is complicated by the fact that Maria remotely knows the prime suspect.