Thank God that I've seen this episode, otherwise I would spend all my life in ignorance, not knowing that Yugoslavian language was spoken in Yugoslavia and that we were overflown with Lothars, Paulinas and Kraftzcyks :D OK, it's just a TV show, it's not a lesson in general knowledge, but I'm sick and tired of all those mistakes considering former Yugoslav countries and now favorite villains - Serbs most of the time, and some Croat now and then. Please, before centering an episode or a whole movie around character from former Yugoslav countries, just google a bit. There were few "Paulina" (extremely rare name here, it's Polish in fact) but only Lothar was Matthaus while he was coaching our football team, and none of the Kraftzcyks (if this surname exists at all, even in Poland, Czech Republic and Slovakia)
Review of Mastermind
