they were loved by everyone. >> everyone maybe. but their own daughter, who admitted to a bitter simmering dispute. >> a family feud. >> she needed her stepfather and mother dead so she could get her property back. >> evidence pointed to her boyfriend as an accomplice. >> blood on the shoe. he was there. >> or was he? >> no hair no, fingerprint no, dna? >> nothing. >> a once loving family now gripped by suspicion. >> i had a lot of people in my ear saying that she did it. >> would the terrible truth rip them apart? >> this cannot be happening. >> welcome to "dateline." a daughter battling her demons, and her mother and stepfather for control of a million-dollar property. after their double murder police started to wonder just how far