I really wish that the State didn't insist that it happened in the home. I find it hard to believe that they were killed anywhere there is carpet, anywhere near walls, all of the clothes, and really, how do you avoid ALL of those things? The prosecution witness, the ME, seems to agree that there would be blood, so IMO there is no doubt that there should have been some blood. I'm sure the defense will go even further with their own witnesses and will have it described as huge pools of blood lol Add to that, the house was not 'clean', there was dust, there were footprints on the floor, and clothes everywhere.
I was taking note of the left/right hand thing too ehenson, I am not sure we can tell much from it because there is no way to know if he was in front or behind them. JMO