The criminal psychologist Richard Brock teaches at the University of Vienna. He used to work as a psychologist until his wife took her own life and he lost his license on suspicion of incorrect treatment. In the meantime he has developed a reputation as a particularly good interrogation specialist and is therefore called in by the police in special cases.

• Gerda Drabek
• Gerhard Liebmann
• Heino Ferch
• Sabrina Reiter
• Juergen Maurer