and also, after mrs. fayed was murdered there was video footage that put mr. fayed in the courtyard. so it was impossible for him to be in two places at one time. >> that security video shows jim fayed trying to make a cell phone call at exactly the moment you see people reacting to pam's screams. not only that, but a tall man wearing a black hooded sweatshirt clearly was not a description of jim fayed. a woman murdered, a bitter divorce. but certainly the husband wasn't the killer. so who was? a very rich mystery was under way. >>> coming up, the hunt is on for a motive and a suspect. did the secret to this killing lay hidden in the rush for gold? >> she wanted to make sure her friends were happy and taken care of, no matter what it took. >> when "dateline" continues. feel the clarity of non-drowsy claritin and relief from symptoms caused by over 200 allergens. like those from buddy. because stuffed animals are clearly no substitute for real ones. feel the clarity. and live claritin clear. in terms of treating sensitivity, 3 days is really fast. sensodyne rapi