Mr. Kindermann has dinner with his secretary Mrs. Kessler in a restaurant. Suddenly he remembers he didn't lock his car, and goes to sort it out. He never returns.
Mrs. Meissner seems to prefer other men's company to her husband's, who is very calm about it, regardless of other men mocking him for it. She always comes home, though, until one dreadful night.
Mr. Lakonda has been released from prison. He goes to meet the attorney who put him in. Although he admits that the conviction was rightful, he says the indictment was built to prop up the attorney's career rather than to serve the justice.
Gerhard Schumann returns from his long trip around Asia. His old friend Oskar Demmler, an unemployed journalist and an alcoholic, opens a can of worms.
Ulrike Berger is murdered in her apartment. Some time later, egyptologist Dr. Roth gets a writ from the board of guardianship, which states that he has been reported to be the father of Ulrike's 17 year old daughter Marianne.
In the brokerage firm of Martin Sasse and Mr. Mandy a collaborator, Jürgen Simon has noticed that the firm has given bad advice to a client who now has lost a lot of money.Jürgen has got photocopies of the documents which proves this swindle and then decides to blackmail Martin Sasse and Mr. Mandy ; if he becomes their associate he will then destroy these photocopies.When Jürgen arrives at his apartment he notices that burglars have come and stolen the photocopies.So he goes to the house of the Sasse family and attacks Martin Sasse who for his defense takes a candlestick and gives him a strong hit in the head.What shall they do with the corpse ? Since some days Bruno, the little brother of Martin has been released from the psychiatric clinic and lives with his family.Then Bruno could be mentioned as the man who hit deadly Jürgen Simon.