reporter: winter worked for a savopoulos company american iron works more than ten years ago. police found his dna on pizza crust inside the family home. even if wint didn t kill anyone he could still be held responsible? if you are involved in any way you can expect the prosecution will charge you agency a defendant accomplice and in most jurisdictions, helping someone commit a murder is punishable as if you had committed the murder yourself. reporter: today a longtime housekeeper of the savopoulos family tells cnn she s not surprised there were not signs of forced entry into the home saying the house was normally unlocked. the security system was rarely turned on and the family often kept the garage door open. as three members of the savopoulos family were laid to rest questions remain as to why they lost their lives. and we know testing of other dna found in the family s home