>> well-known name, big jeweller. >> the store has been there for 50 plus years. >> so she's had dinner that night and then she goes home to spend the night at his place. >> that is correct. he told us the last time he had seen her is he was getting in the shower, and she had gotten dressed and left. >> that makes him the last person known to have seen her alive. >> correct. >> which puts him in an investigative jam. >> it puts him as a person of interest, that's for sure. >> but hargrave's investigative status was soon upgraded. remember that security camera footage of crystal leaving for work? those videos were recorded at hargrave's home. we know that because he gave us and other news organizations the footage but the sheriff said hargrave didn't give those videos to his investigators, didn't even tell them about it, not at first. >> they released some of the video and pictures to the national media before our detectives even had it.