[1] Established in 1947, the brothel Pension Clausewitz was located in the Charlottenburg district of Berlin on the third floor of 4 Clausewitzstraße, a side street off the Kurfürstendamm.

Hans Helmcke took over the running of the brothel, assisting him were Fritz Wussow and "Consul Josy" Eugen Indig.

It was rumoured that politicians in Helmcke's brothel had been guests not only from West Berlin, but also members of the Bundestag and its ministers, high-ranking business representatives and other important celebrities, and that the prostitutes were extensively questioned on behalf of the Stasi.

A number of well-known politicians, including the Berlin Senator Heinrich Albertz and Federal Minister Erich Mende were specifically suspected of being involved.

[4] The Pension Clausewitz became the center of extensive coverage, in which a large espionage and party scandal was suspected.

title Hotel Clausewitz) starring Wolfgang Kieling, Maria Brockerhoff and Friedrich Schoenfelder in the lead roles.