I think "discrepancies" is quite possibly the codeword for "failed", or it refers to parts in the test where on related questions, the results point to truthfulness for some and deception for others.
Which is why I think it speaks to PK's bravery and wisdom (imo) to have all those concerns addressed here,to help clear them up and to look at every other possible angle.We know about PK- because he has come forward, but who knows how many others might have been questioned and "had discrepancies"?
But in mid-August police asked him to take a polygraph test lie detector and he agreed. A detective told him flat out that he was a person of interest. Phil understood why police were spending time with him.
To some extent I can understand it, because I had opportunity. I gather that's all you need for them to declare you a person of interest.
For most questions, police request one-word answers when administering a polygraph.
Did you kill Audrey Gleave? he was asked.
No.
Did you cause her physical harm?
No.
Do you know who killed Audrey?
No.
Were you present when she died?
No.
Phil asked the detectives some questions of his own. Were they talking to other persons of interest?
That's one question they would not answer for me, he said. It's frustrating, because they share so little information but they expect so much.
FROM WOODLAND'S ABOVE LINK(thanks) Just wanted to add this bit instead of posting too many in row as I often do, sorry.
Imo, one could falter on the last two questions in polygraph-ie. what if you kind of think someone did it and if you were not absolutely sure that the person ie.AG,was in fact deceased. Just a thought..