At the campus Diana Thyssen is raped in the toilets. They get stuck with the investigations and Inspector Donckers thinks her old Professor in Criminology might help. She has a friend, Saskia Devriese, who was raped on a campus ten years ago. She thinks both cases have the same perpetrator. But can she persuade Professor Teerlinck to help her, because he's not especially social, says what he thinks and defends opinions which go against public opinions?