Herz aus Glas (1976)

Director: Werner Herzog
Cast: Brunhilde Klöckner, Clemens Scheitz, Josef Bierbichler, Sonja Skiba, Stefan Güttler, Thomas Binkley, Volker Prechtel, Wolf Albrecht

Synopsis:

A small Bavarian village is renowned for its “Ruby Glass” glass blowing works. When the foreman of the works dies suddenly without revealing the secret of the Ruby Glass, the town slides into a deep depression, and the owner of the glassworks becomes obssessed with the lost secret.