>> i -- for me, this is the greatest failure of my life. the only way i live with this situation is that i did the best that i could. i did everything that i could think possible. >> definitely jekyll and hyde personality. at one moment, he's mr. calm and cool. the next moment he's something totally different. >> i think she would be really happy to know that people love her so much to find the real answers to what really happened to her. and she would be happy to know we haven't forgotten about her. >> the case against mouser was largely circumstantial but the photogrammetry helped convince the jury. >> photogrammetry was the key