Siegfried Grönig

Hart an der Grenze

Wolfgang Tumler

Klaus Löwitsch, Max Volkert Martens

Der schwarze Obelisk

Peter Deutsch

Udo Schenk, Rainer Hunold

Das Geheimnis der chinesischen Nelke

Rudolf Zehetgruber

Paul Dahlke, Olga Schoberová

Professor Wilkens has invented a formula for a new type of fuel and puts it on a microfiche that he sends to his daughter and her bodyguard, but multiple different mysterious groups, including the "Chinese Carnation", would kill to get their hands on it.