tell her the nascar nana story about how she -- when she was born and -- and just never let her memory die. >>> that's all for now. thanks for joining us. >>> i'm craig melvin. >> i'm natalie morales. >> and this is "dateline." >>> never good news when the phone rings at 5:00 in the morning. i knew something wasn't right. he just began sobbing and saying no, no. >> it was just before midnight when the shooting started. >> he had been shot multiple times. he was on the ground, face down. >> a man was dead, but not just any man. >> how do you kill super man. >> he was annin and father killed, his wife says, by an intruder in his own backyard. >> describe how fast they were. >> pop pop pop. >> if her husband was dead outside, why was the gun found hidden inside and what other secrets were hidden away? >> sometimes she would say things like i would be better off if dave wasn't around? >> was his husband defending his family or was she. >> she rose that knife. >> the mystery may not be who did it, but why. >> the truth will come out and justice will be served. i have to believe that. >>> to