In Munich on the 27th of March 1952 preparations were made to assassinate the German Chancellor Konrad Adenauer. A young man was supposed to detonate a bomb in his proximity. That same day the terrorist attack ended in unexpected fashion. The police attempted to find the man behind the attacks for decades - without success. It was 50 years later, in winter 2002, that the journalist Henning Sietz - author of the controversial book “Attack on Adenauer” - rediscovered the files of the investigation in a public archive. These documents, complete with a large number of photographs and many details, describe the course of the unsuccessful police investigation - complete with numerous mistakes - which lasted almost 10 years. Now filmmaker Matthias Unterburg, working together with Henning Sietz, has once again studied this long-forgotten criminal case from the year 1952 in a program commissioned by ARD. After extensive research in archives in Germany, the USA, France and Israel, along with a great many connotations with contemporary witnesses and those involved, they have succeeded in reconstructing the secret story of an attempted political assassination in a tense TV documentary founded in objective fact... which comes up with some surprising results.