. >> no, not with nanette.no. my brother, i might have had a fight. i mean, i've been fighting with him since i was born, but with diane, i ain't never had a cross word. and she never had a cross word to me. >> we asked brian if he had any theories about nanette's murder. >> i would not have a clue. you know, it'd be like snowing in louisiana is a one. >> time thing. >> every now and then, you know? >> yet investigators stand by the assessment that nanette's death was a homicide, and everyone still needs answers. >> i don't know what to think, because that's not where she was found. does not make sense to anything. >> i don't see it as a random act of violence. this fire. whoever, whoever set the fire knew what they were doing. it is a homicide that did occur, and that's what we're going to handle it. >> i want to know what happened. i can't wait to look at that person. and. just know who and why. >> those are questions police still can't answer, and they need the public's help. remember the mystery man seen ou