With a whistle, Leni tries to scare off an anonymous caller who has been harassing her on the phone for days. Chief Inspector Trautzschke is very worried about his daughter, because a stalker can be dangerous in his love affair.
The painter, Max Leutner, who had a love affair with the photographer Nadine Döbner, is drunken and goes to the Graf Gallery, where Nadine is celebrating the opening of her exhibition of photographs.
In a restaurant Pascal Bortloff announces his girlfriend Maria Hoffmann that they must give up their relationship. On the next morning Pascal Bortloff will be found dead by a hit on his head with a bottle of brandy.
On the morning the mailman tries to speak with Mr. Jochen Gahl who doesn't answer. The mailman and Mrs. Gerold, the female neighbor and friend of Jochen, discover the corpse of the professor Jochen who has been stabbed to death.
Anne Klausner, the daughter of the grocer Klausner, has disappeared. His father has decided to consult with a medium, Hajo and Ina will be present in the session. The medium speaks about a lake, deep water and a tower.
Mr. Ingo Buschmann, an insurance broker has been killed by a shot in his house when he was at the television. The murderer came to a condemned house where he found a rifle with telescopic sight and from a window made the fatal shot.
The body of a young woman has been found in a parking place of the highway near the airport of Leipzig. Her name is Claudia Hellberg and she lives in Stuttgart. She came from Stugatt to Leipzig by plane.
Two old men are now together before the tomb of the woman that both have loved. But 60 years ago they began to quarrel for her love, Kurt Schwennstedt went to Sweden where he had a successful career as art dealer.
On Sunday night the Dr. Holger Zerban has been killed in a park near his apartment; he received a shot in the breast. Ina and Jan go to the apartment and a neighbor tells them that somebody was ringing the bell for a long time.
The corpse of Anita Krug has been found in a bathtub of a hotel room. The team visits Bernd Krug, her husband, who says that he has followed his wife, but he didn't enter in the hotel room.
Hajo Trautzschke and his daughter Leni went to a concert of Babette Bischoff. On the morning Babette has been found dead in her house, on her body there was many bruising. Hajo meets there Marcello, the Brasilian husband of Babette.
The entrepreneur Otto von Saalfeld has disappeared. His wife, Corinna, is very preoccupied and has asked the police for help. Corinna tells that they have received anonymous phone calls.
When repairing a burst water pipe, the construction workers can hardly believe their eyes: they find a human skeleton in the road foundation. The SOKO determines that the remains can only be the building contractor Egon Scherer.
Nils Kretzschmer has been found dead in his apartment: somebody hit him with a dumbbell. It's his girlfriend Julia who discovered the corpse of Nils. Julia is very bad tempered and says that she knew Nils in the mechanical workshop.
Frank Lahnfeld, a journalist who lives with his sister Lissy Lahnfeld has been killed by a shot. Lissy, who is blind, noticed that a man was hiding behind a door and that man had a special smell.
Miguel and Hajo are on their way home when they are called to the Kronen pharmacy. A customer heard a shot. When the two SOKO officers arrive at the scene, they find the murdered pharmacist Renate Menzel.
Early in the morning Ingo Meier has come back home in a taxi: he was drunken and when he saw Mr. Paul Baumgarten with his little dog he began to insult him and to beat him. A little later Mrs. Margot Baumgarten found her husband lifeless.