A garbageman finds a dead woman in the truck after his round thru Cologne. Valuables and ID are still on the wealthy woman. Anna's murderer? T wants a normal life and starts dating Christina again.
Debbie's boss is found murdered at work on the evening, Debbie worked late. Her fiance, Daniel, and Anne investigate. T is in a mental home, mentally absent.
Clara and a man are shot outside her house. Clara is the wife of the man, who killed Rabe's daughter in a car accident. Rabe's DNA is at the crime scene. He asks T for help.
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.