case that's just not going to be solved? >> it's frustrating for him putting all this work in and to think that these people might get away with literally literally murder. >> patty is tom's wife and together since high school knows them better than anyone. she was used to his compulsive perfectionism. >> it is comforting to me i think to just know what things are and where they're going. >> is nothing out of place since of order? >> he's a very stubborn man so for him to take a case he is going to do it and solve it. >> and so detective dove decided to start over. take a different approach this time he immersed himself and sandra's old phone bills. seized by detective why years before. >> i did is i went through every telephone call on those phone records looking for somebody related to this case. there had to be some communication. >> get anywhere? >> --