Desc: Der verlorene Sohn: Uwe Böhnhardt - Der Weg in den Untergrund: Directed by Andreas Kuno Richter. With Thomas 'Kaktus' Grund, Brigitte Böhnhardt, Jürgen Böhnhardt, Roland Jahn. A group of students in a video workshop scan subjects of hatred and right-wing violence. They discover previously unpublished footage of the terrorists Beate Zschäpe, Uwe Mundlos and Uwe Böhnhardt.