Sleeper
Schläfer (original)
Johannes, a new assistant at the university, is asked to provide reports on an Algerian colleague - who is suspected of being a sleeper. He refuses, but the seed of doubt has been planted. A fragile friendship which is overshadowed by professional and emotional competition eventually leads to betrayal.
Starring Bastian Trost, Mehdi Nebbou, Loretta Pflaum, Gundi Ellert, Wolfgang Pregler
It's a drama and science-fiction movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Saudi Arabia.