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A cleaning lady finds a corpse in a nightclub. Harry Klein, Inspector Keller's youngest employee, is tasked with solving the case... Still not enough? For more cult crime series: http://bit.ly/KKrimisubscribe You might also be interested in: http://bit.ly/2BFGnXi This crime series, one of the most successful of the 70s, always stood out from the crowd with stories that were taken directly from real life. The inspector and his team were not superheroes, but normal police officers doing their job - hunting criminals. Violence was left out because it was recognized that exploring the psyche of a perpetrator is much more revealing for solving a case. Screenwriter Herbert Reinecker, well known for other top series such as "Derrick" and "Der Alte", once again proves his skills as a master of crime series.