Angst
Starring Heino Ferch, Anja Kling, Dietrich Hollinderbäumer, Udo Samel, Lena Stolze, Falk Rockstroh, Hary Prinz, Sandra Borgmann, Gustav Peter Wöhler, Nicole Ernst
It's a documentary and crime movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Australia.