Joan Collins is to make a short screen comeback in the most popular German soap opera “Verbotene Liebe” (Forbidden love).They produce it at the end of February in Düsseldorf and she will appear as a guest star in April on the show.
“Verbotene Liebe” was first broadcast in 1995 and plays in Düsseldorf, former fashion capital of Germany, at the Rhine river not far from Cologne and became one of the most successful soap operas in Europe. http://en.wikipedia.org/wiki/Verbotene_Liebe
Also it is well known for its gay love story between the characters Oliver&Christian. You can watch all the episodes of their love story on youtube with subtitles.