I know there have been a lot of theories that mention the skill set of the murder. Were they experienced, were they sloppy and careless. To be honest to go into a house and murder four people, two each on two separate floors, not wake up the others in the house and escape into the darkness without a sight would seem to that there was some kind of experience involved. But, what if the murder just got lucky, what if everything just fell into place that enabled them to be able do what they did? Is it possible this was a first timer who had, for lack of a better term, beginners luck and might that emblazon them to do this again?