I don't know if Jarka is innocent or guilty...if he truly is a sociopath, it would be nearly impossible to tell if he were lying or not. The circumstantial evidence does not look good...I especially found the presence of the paint chips from the kicked in garage door found on the car Jarka was supposedly driving to Starbucks while the murder was committed to be especially damning. I guess no one will ever know the truth unless he or the "real killer" confesses! (shades of OJ and Scott Peterson).
An interesting side point I have not seen mentioned on here is concerns the 20/20 reporter doing the story. Jim Avila's parents were very devout JW's! I think Avila went his seperate way from the religion when he was in his early 20's, but he definitely was raised as a JW in his early years. Avila took the maiden name of his mother as his "stage" name when he went into journalism. I believe he did this to differentiate himself from his dad who was also a journalist. I was in the same congregation as his parents for many years and his father, Jim Simon, was a very prominent and respected elder. Jim Simon was also a very well know news correspondent and journalist, having interviewed nearly every important world leader of the 70's and 80's. I recall him telling me that he once placed a Bible and Truth book with Anwar Sadat while interviewing him. Jim Simon was one of my favorite elders and friends back in the day, and I was very saddened when he passed away from complications of lifelong diabetes.
I would have thought that Jim Avila might have woven a bit more of his knowledge and experience about JW's and their culture into the interview of Jarka. I believe Avila's mother, brother and sister are still active JW's, so he still has an indirect connection. It might have made for an interesting twist to the interview...
TYA