A genius designer is found murdered in a tramway control center.

Koskinen continues the investigation against his superiors wishes.

Koskinen investigates when a 16-year-old girl is found strangled with a fishing line.

Koskinen races against time to find the killer.

Koskinen leads the investigation into a bank robbery gone wrong.

Koskinen's investigates suspicious deaths in a psychiatric hospital.

Koskinen's latest case begins with the discovery of a man found suffocated in Peltolammi.

Koskinen and his team investigate a series of killings in an assisted living facility.

Koskinen is assigned to investigate a series of crimes related to drug trafficking.

Koskinen desperately tries to locate a police informant.