Brüder auf Leben und Tod (1995)

Manuel is the right-hand man of drug lord Renato Calvi. After Manuel witnesses his boss brutally punishing a man who apparently betrayed him to the police, he decides to break away from Renato and go into business for himself. Renato is not happy about this and now wants to involve Manuel's younger brother TS in his business. But what no one suspects is that TS is working closely with the police!