Kulcsár says towards the end (at the assessment of the test) that Abigail, the spy girl, had to play a double game to deceive not only Jung, but Markó too, into thinking that she is his relative. Though in the movie, Markó said explicitly, that he never sent out the mail to the girl, in which he wrote anyway, that he was too sick to receive her. So Markó must have recognized this ploy from the beginning (he actually asked Jung whether he sent the girl), but Kulcsár (as the supervisor of the test) must have known, that there was no mail sent out to begin with, so it's irrelevant what Markó thinks of the girl (but he can confidently assume, that she is not his niece).

Other than this, it was a very captivating and well directed movie.

I loved this movie. The story was great, with unexpected twists and a tension that builds up until the final resolution. The acting was excellent, from the main characters to the more minor ones. And the movie recreated perfectly the atmosphere of Eastern Europe behind the iron curtain - with the omnipresent threat of the state security apparatus weighing on its citizens. The details were wonderful too - from the old cars to the old buildings (those metal banisters!) to the old furniture, pots and plates and faucets. Excellent! I hope the movie becomes available on the usual streaming platforms in the US.