for 25 years ed and rosalie camiolo lived in an affluent suburb outside of philadelphia. ed was a retired government worker and rosalie worked in the computer industry. their only child, paul, a 31-year-old computer programmer, lived upstairs. he took care of his parents since they had difficulty getting around. >> it's not that they were bedridden or complete invalids, but they certainly weren't athletic and able to respond, in my opinion, to an emergency situation. >> just before dawn in september of 1996, paul made an emergency call to the fire department. >> 911, what is your emergency? >> we have a fire in our living room. it's getting really bad. >> get out of the house. we have the fire department coming out. >> when police arrived, they found paul on the front lawn getting dressed. paul said his mother and father had gotten out through the back door. when the officer went to the back yard to check, there was an explosion. she found rosalie on the back porch severely burned and barely conscious. but there was no sign of her 81-year-old husband, ed. firefighters late

for 25 years ed and rosalie camiolo lived in an affluent suburb outside of philadelphia. ed government worker and rosalie worked in the computer industry. their only child, paul, a 31-year-old computer programmer, lived up