there. but for a half century, she never cared the world didn't know who she was. for the first time she's talking about it publicly. the telling of a deeply personal, deeply painful moments from that day. i met her at the civil rights museum in memphis which stands on the grounds of the lorraine hotel, the site of dr. king's assassination. >> i'm standing on this side. >> reporter: mary ellen ford has stood here before. where is dr. king? >> on this -- in front of the 306. >> reporter: this picture taken in 1968 is the photo the world would come to know. on the balcony of the famed lorraine motel, three people point toward the sound of a gunshot. dr. martin luther king jr. lays dying at their feet. a small crowd can be seen gathered below. >> reporter: where are you in this picture? >> this is me right there. >> reporter: right there? >> yes. >> reporter: that young woman in white is mary ellen.