detective james gamber supervisor back then was keith st.and you had his name from two different sources. one of which was the fbi? >> yes. >> and you never talk to him? >> no. >> it would be years before investigators realize how significant an omission that was. but there is no disputing that the neil mcneice tip was never followed up. and so investigators changed focus. and looked away from gary triano's business relationships. >> you do two things. let's follow the evidence. and you say follow the money. always follow the money in a homicide. and then you look at who benefited from the death. >> reporter: investigators were now examining gary triano's closest personal ties. was there someone closer to home? to whom gary may have been worth more dead than alive? >> i remember asking him, why would anyone want to follow you? and he said because of a life insurance policy. >> reporter: coming up, the women in gary triano's, what an ex wives club. and an angry former girlfriend. >> they were not happy, between she and gary triano. >> i think