A brutal murder alarms the police authorities. With the investigation leading to confusing controversies, the eccentric professor of criminology Dimitris Lainis is asked to shed some light on the mystery.

A woman is found mysteriously murdered. Soon her identity is revealed, but the enigma surrounding the circumstances of her tragic death remains unsolved. A female eyewitness might give some answers.

The police authorities 'return' to the first crime scene, looking for new clues. In the meantime, Barasopoulos decides to engage Christina in the case, so they can both benefit from their collaboration.

New leads draw Dimitris and Barasopoulos ever closer to the elusive culprit and lead them to an alarming conclusion. Will they be able to predict the perpetrator's dramatic next move before it's too late?

In the dramatic last episode, the police authorities race against time to locate the perpetrator and put an end to his killing spree. Will they succeed in solving the mystery and finally closing the case?