Jürgen Sander, an 40 years old alcoholic man, has been fund dead on the sidewalk. The autopsy shows that he had 2 pro 1000 parts of alcohol in his blood. He was thrown out of the window with a broom. His ex-wife explains that he was living alone, that he was trying to enter in contact with his 17 years old daughter Caro and that he found the support of an alcoholic anonymous group. When Miguel and Jan try to speak with Robert Conzen, he repeats that the members of the group are protected by their anonymous condition. Hajo decides to go undercover in the AA group posing as Dieter an alcoholic civil servant. Jan and Miguel enter in the place for an identity control: Hajo goes in a cafe with Sabrina Steffens, they speak a little and later Hajo refuses to go her apartment. A member of the group called Gerd managed to escape. On the morning Jan goes to the apartment of Sabrina, listened to a noise and had the feeling that a man was with Sabrina. Maybe it was Otto Strack, a man who drunk very before going to the session of AA.
—zutterjp48