blast that killed dar foley. >> reporter: the detective was also thinking this. e one other person in that house at that time was tom foley. >> coming up -- >> he wanted the house. he wanted her money. if he divorced her, he lost everything. >> was that a motive? and was tom foley the killer? whether mystery at heath bar farm continues. you were made to move. to progress. to not just accept what you see, but imagine something new. at invisalign®, we use the most advanced teeth straightening technology to help you find the next amazing version of yourself. it's time to unleash your secret weapon. it's there, right under your nose. get to your best smile up to 50% faster. visit invisalign.com to get started today. you can feel safe for only $49.00. that includes security panel, keypad, key fob, entry and motion sensors and for a limited time, get a camera included and installed at no additional cost. >>> a young boy says he heard the shotgun blast that took dar foley's life. was he to be believed? the only person in the house at the time was her husband tom. he stro