Wow, guess that's our answer. Although, I have to say I had my doubts it was Heather, simply from the way the M's acted. They have never appeared worried that her body may have been discovered in Florida. When you think about it, it just points to their involvement to me and that they know where she is.
I'm having a tough time believing it, myself. All this time it's been FEMALE. All this time. Unexpected turn, to say the least. A part of me was prepared for it not to be Heather, but I didn't see this coming.