. >> the relative is frank porco, known as frankie "the fireman" porco. >> he was serving time in federale rumors that frankie porco would provide state's evidence and information in return for a lighter sentence. >> it was what they call a signature killing, you know, that the mob would do, and it was a fireman's act because it was retaliation by frankie the fireman. >> but there was doubt on this theory. >> he was in prison because he wasn't a snitch. and he had been made offers to cooperate with authorities to avoid prison, and he didn't, so he ended up in prison. >> then investigators learned that peter and joan porco had life insurance policies totaling $1 million. investigators also learned that christopher porco asked for investment advice before the murder. >> christopher had gone to a financial counselor and asked him to write up a portfolio for him. he told him he was receiving millions of dollars from a relative. >> and before his father's death, christopher e-mailed him asking for all sorts of personal financial information. >> yo, pops, if i could have you and mom's social se