A student is raped in her student dorm. DS Deckert of the Cologne police remembers a similar incident 10 years ago that involved her student friend. So she tries to get support from her former criminology teacher, Professor Thalheim.
While at a bar, Marc gets a call from his wife. Someone's in their home. He calls the police and heads home. She's been stabbed to death. Kripo and T investigate.
A plastic surgeon is found murdered in a hotel room, covered just by a bloodied dressing gown. Two champagne glasses on the table indicate he was not alone. DI Deckert turns to criminologist Professor T. to identify the mysterios consort.
