ron holthaus. ron admitted he and stephanie had a romantic relationship, but he denied they ever slept together. and then ron told them something very interesting-- that he had ended the affair. it was the night she moved into the condo, he told them. he said to stephanie, it was over. but thanksgiving day came, went. no stephanie. an overstretched local police force called in the colorado bureau of investigation. greg sadar was the agent who answered the call. soon, he was standing beside the shallow blue river, staring at what looked like a lump of snow and some rocks. greg sadar: there was several inches of snow on top of her and you could see the body underneath the snow. keith morrison: it was stephanie, all right. but how did she get here? craig melvin: "dateline" returns after the break. [music playing] where can nfl fans get a great deal that turns christmas day into game day? x marks the spot. the nfl is streaming christmas day games exclusively on netflix, and you don't want to miss a mom