I just caught a bit of that story, but did you notice that the "obscure couple" was stabbed in the throat as well? And that the relatives kept repeating what good Christians they were? Just gave me the creeps, considering this article.
Nope. Perhaps there is a connection in methods if not in actual suspects?
I find Greta's tortured language so distracting I end up paying more attention to her diction than what she is saying. That is one reason I refuse to watch her. It is simply too painful. Her guests always speak better than she does.