Interviewed Skylar News Today : Breaking News, Live Updates & Top Stories | Vimarsana

It's ridiculous. i mean, taking care of heath was on my mind. wondering who killed my wife was on my mind. they don't know the things that i've been through. >> reporter: maybe so. but detective carbon was keeping a very watchful eye on tom foley. he decided to interview the other foley who was at the farm the day dar was killed. tom and dar's son heath. >> i'm detective sergeant carbon. >> reporter: heath and his friend were in the house playing video games. waiting to be driven to heath's birthday celebration. >> did you see anything different or out of the ordinary or anybody walking around...

Stunning as the news of dar's death. could you conceive of tom either hating his wife so much that he wanted to kill her -- >> absolutely not. >> reporter: or killing her for the insurance money? >> absolutely not. >> that would be stupid. she made good money. >> he has never been one to want things. it's not like money has been -- was real valuable to him. >> reporter: you think they had a good marriage? >> i do. everything seemed to be going real good for them. >> reporter: it seemed sadistic, shooting your wife at point-blank range, killing the mother of your son on the very day he was cele...

Wife. investigators hadn't found the weapon. so they went hunting for motive. >> reporter: from the mouths of babes or in this case one articulate 10-year-old boy came what seemed like a case breaking revelation. >> there was a loud, loud -- >> reporter: detective carbon believed 10-year-old skylar was an ear witness to the shotgun blast that killed dar foley. if true, it meant dar was murdered earlier than originally thought. more significantly, it meant tom foley was still in the house when the murder occurred. >> that lead was huge. it was very, very important. >> reporter: if tom foley was...