At first, Henny seems harmless. A polite 30- year-old male nurse, always with a roguish smile in his face. But psychologist Bloch mistrusts the new boyfriend of his daughter Leonie. He soon realizes that Henny is seriously mentally ill and dangerous. Bloch hasn’t got much time to make his daughter realize this. Leonie and Henny want to get married in just a few days. During his investigations, Bloch walks into a deadly trap. Episode 8 of the loose psychological series Bloch deals with the borderline syndrome.