The focus and namesake of this series is Nikolas Heldt (Kai Schumann), Commissioner at Bochum’s Criminal Police Department. With huge passion and total dedication, Heldt does everything in his power to solve his cases – as his motivation comes from his sense of justice.

Chaotic and impulsive: Stefan Vollmer (Hendrik Duryn) is a hero with many flaws. And he, of all people, ends up being a teacher at ‘Georg Schwerthoff School for the Challenged’.