Season 1

Chief inspector Koskinen and his team start investigating this senseless series of crimes. It is not an easy assignment, and it also causes distress in the youth caught up in the situation.

An old man is beaten within an inch of his life in the Nekala area of Tampere and arson takes place in Hervanta. The main suspects are a teen gang. Soon one of the gang members turns up dead.

A peculiar gang of disabled men have made the assisted living centre their home. Soon another attack takes place and a terminally ill woman, has no chance to escape from the killer's clutches.

The Violent Crimes Department is put in a tough spot when an unknown body turns up in the west side of Tampere. He had no chance of escaping the attacker because he was in a wheelchair.

Koskinen's former colleague Roine has been admitted to a mental hospital. When the patients start to die of strange heart attacks, the old criminal investigator's suspicions are aroused.

Koskinen has been promoted to Chief Inspector and faces his first challenges in his position when a jewellery store robbery ends in a sudden gunshot.

Concurrent to the investigation, the girl's father flies into a vengeful rage, starting his own investigation on the matter.

As if Koskinen wasn't busy enough, a nightmare scenario takes place in the Hervanta area, Tampere: a 16-year-old girl is found strangled with a fishing line.

A computer virus has been attached to the Tampere tramway control. Virus messes up the entire test-phase operation of the tramway and causes a power outage.

A genius designer is found murdered in a control center of the Tampere tramway. There seems to be plenty of secrets between the people at the center.