The investigation uncovers a revenge plot gone awry.

A district prosecutor is assassinated outside of his home.

In the middle of the investigation, Alla faces a disaster of her own.

A serial killer uses social media to target young women.

The kidnapping ransom goes mysteriously unclaimed.

Desperate parents ask for help in finding their missing son.

The team discovers some of the scholar's many enemies.

Cultic symbols are drawn on a history scholar lying dead in his kitchen.

A post office robbery plot leads to a break in the case.

A man put in jail by the Colonel requests help in finding his missing son.

The counterfeit money leads to a printing press and a kidnapping.

The Colonel stops an armored truck robbery, only to discover the money is fake.

Arno uncovers a love triangle.

A dazed child covered in blood leads to a gruesome discovery.

A second murder and secret emails lead the Special Division to the culprit.

An upper middle-class woman is found dead in the park near her home.