that, he warned the family, could take a long time. >> i said we've got a great investigator in brian mccartin. you just have to trust us. you know, there's no statute of limitations in a murder. >> reporter: for the next two years detective mccartin quietly kept compiling the case, reviewing the evidence, interviewing dozens of people who knew joel, sxwrenks matt. >> i think it's persistence, is the key. just don't give up. if you give up, the case will never be cleared. and i have a lot of persistence. i never give up. >> reporter: mccartin also kept track of jennifer and matt, who were living in a secluded townhouse but keeping a low profile. >> she always used the word officially. we're officially a pager and a p.o. box. we don't want anybody to know where we live because the intruders might come to try to find us. >> reporter: but the newlywed fletchers weren't shy about sporting around the neighborhood in their fancy cars, adorned with distinctive license plates. >> one of them said the acronym for "create wealth." and the other said "quit work ' workin'." and he had a motorcycle that ha