I'm talking about Hunted Hunter quest, I heard that you need Persuasion and Perception, without cheats I had Persuation 5 and Perception 2, but it didn't work so I maxed them by cheats, but I still can't get an option that he isn't telling the whole truth.I'm playing as malk and my patch is 5.3, if that helps.
The first time I managed to get Knox to talk was when I played a Nosferatu with high pursuasion and investigation. I thought it was because of the Nossie clan, but then I was able to use a different clan to access it. I can't remember exactlly, but iI think it requires both inspection, persuasion and the correct normal dialogue choices, I think you need to be nice to Knox, and neither refuse or accept his requests. Sorry I can't remember the exact way, as I only came upon it by accident.
As I recall it's either perception, investigation or a combination of the two. Malks also supposedly have an easier time getting it; like say..... Other clans need 2-3 points in perception to get it, but malks only need one point.
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Awww finally got it, but only with new game ( i had to restart because i updated my patch to 5.4 and didn't want any problems).Still don't know why i couldn't get it before, I don't remember being mean to Knox or anything :)