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.
A young Vienna-based taxi driver of Turkish origin witnesses an extremely brutal murder. The perpetrator, a serial killer, makes eye contact with her; a deadly game of cat-and-mouse ensues.
Horst receives the monthly pension from his grandmother. The only problem is, that she is dead. As a local politician wants to congratulate the grandmother to her birthday Horst "borrows" an old lady from a hospital nearby, not recognizing that he just kidnapped actress Elfriede Ott.
