>> there's a heavy metallic kind of humidity in the air almost. you almost feel its presence if there is a lot of it and there was a lot of it in the hunter household. >> reporter: to the left of the front door, in the dining room off the main hallway, lay the body of the boy, tom hunter. >> he's lying on his face. his hands are down at his side. there is a fair amount of blood around his head. >> reporter: and down the hall, the body of the housekeeper, shirlee sherman. >> she was found laying face down with a large amount of blood underneath her, a stainless steel handle of a kitchen knife protruding from the right side of her neck. >> reporter: both victims had been killed in the same way. and oddly enough, there were no signs of struggle. no fingerprints, no bloody footprints. >> was this person careful or just very lucky? >> could be both, you know? it -- it's not like tv. not every crime scene is gonna yield fingerprints. not every crime scene is gonna yield dna, or trace hairs, or