I don't get why anyone would go through all this trouble in the first place. They didn't even leave her head. They can't possibly think we won't be able to figure out her identity eventually.

[He chews on his lip.] If the weapon really was a knife in this kitchen...then it might not be those two at all. They wouldn't need the deadweight items in that case. [And along that line of thought, he begins to examine the blood in the kitchen more carefully to see if it's more concentrated in one particular area than another or if there are any discernible trails...and so he'll have an excuse not to look at the torso.]