strong tale from none other of karen's >>> they're in a surreal minutes and hours and days after, karen duenass murdered. >> the best that i can explain my mom is purest of hearts is the best way that i can say it. >> the whole big family, karen's family as well as mark's, parents and brothers and sisters, gathered to support each other and mourned. the word on the street is there is no question at all. >> we had rumors, out lan dilan rumors. >> rumors that it was mark. >> ridiculous. >> i know it is no way possible. >> may parents were best friends from long as i can remember. >> why would detectives be so suspicious of the man married to his high school sweet hard for 30 years and led alone a violent act. it is true when wives are murdered, husbands are i am p implicated. >> minutes after mark sat down to talk to detectives, he volunteered that sounded like a motive for murder. >> what was going on in our life and it scared me when i think about it. >> it was an odd story. towards 2012, a u.s. co-worker if he had ever gone on facebook, no, he has not. have you ever wonder what happened to pe