pamela vitale, horowitz's wife of ten years, was found bludgeoned to death inside a trailer, next todream home the couple was building. initially, investigators wondered if her killing had anything to do with the susan polk case. the road outside horowitz's house sprouted a crop of hungry reporters. did police consider horowitz a suspect? >> a number of people have asked whether you were asked to take a polygraph, whether you were polygraphed, and whether you'd be willing to take one. >> i have not been asked to take a polygraph. i would take a polygraph at any time that the police asked me to do it. >> reporter: about a week later a young neighbor was charged with killing pamela vitale. he pled not guilty. and horowitz was left in relative peace to grieve. but not by everyone. >> i was appalled. of course. i was shocked. >> reporter: the murder forced a mistrial in the polk case. but as a new trial was about to begin, as a still grieving dan horowitz was preparing for it -- >> i am concerned that dan was involved in her murder, and i feel -- i will stand by that. >> reporter: and so