A young woman is shot in the face through the peephole, an identification seems hardly possible. But it's not the flat owner who has been shot. And professor T returns to Cologne, to help Daniel find the killer of Anneliese Deckert.
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.
