>> jen and pat thought there was someone else who should be looked at with suspicion. someone much closer to heather. her ex-girlfriend carmella. you guys go back and forth between carmella and josh being involved? >> i did. >> they were the only two that made sense in my mind. >> jen said it was common knowledge that carmella and heather fought. and they'd fight about what usually? >> it was mostly jealousy stuff. >> something else that implicated carmella, said jen, was the way heather's killer cut her hair. >> heather dyed her hair a lot and it was kind of fried, and she didn't think carmella liked her hair. i just instantly was like, her hair's cut off. what do you mean? who would -- who would touch her hair? you know, nobody made sense except for carmella. >> jen and pat shared their feelings with detective o'connell. >> to an investigator, when you have somebody's hair cut, they're doing it as a means of