The Rich family is very conflicted. They obviously want their son's murder solved, but also want the possibility that he was a source for Wikileaks to be ruled out.
Both of those might not be possible in this case.
Their main concern is to prevent any more deaths in the family.
Or... they have been reminded in no uncertain terms by DNC Party "associates" that the killer is still out there.
Seriously, I personally knew a family whose father was an operative for an intelligence agency a few decades back. He died under questionable circumstances. The family started asking his closest associates for any information they could provide. Any answers they received were not adding up and they pushed for an official inquiry. A short time later, the father's best friend in the department paid a visit to the wife and informed her that his bosses strongly suggested that she stop the inquiries or she may risk losing any and all survivor benefits due to her and her kids.
Not suggesting any intelligence agency involvement in the Seth Rich case. But it wouldn't surprise me if Seth's parents received a similar message or worse from the DNC cartel. Think Kathleen Willey.
The parents are more concerned about their DEMOCRAT STATUS than finding the MURDERER of their son!! Reminds me of the Chris Stevens family!!