The 911 Call

As I expected, not much response thus far to sorting through the various Thrill comings and goings, and I'm currently thinking about some other things as well. Meanwhile though, in private communication someone has proposed a theory to me, completely, utterly different from the path I've been headed down here. It's interesting, though it certainly raises other questions and is not a path I'm persuaded of -- and, it is very largely influenced by the actual 911 call made from the crime scene. Personally, I don't find that call odd or suspicious, but others do -- so if you've listened to it, and have any thoughts one way or the other, I'm curious to hear them out.
Or, if after reviewing a lot of the released materials, you have your own fleshed-out theory about the commission of this crime (don't need to follow my ideas; I want to consider all options) I'm interested to hear different scenarios.