Diamantenparty
Starring Barbara Rütting, John van Dreelen, Wolfgang Preiss, Ralf Wolter, Fritz Muliar, Heidelinde Weis, Michael Cramer, Maria Sebaldt, Joachim Hackethal, Sigrid von Richthofen
It's a thriller and comedy movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Brazil.