michelle le vanished from a hospital parking garage. her family remains hopeful she is alive. police have been tracking her electronic trail, video, audio, text messages, cell phone pings. so many clues that seemed to have picked up signs of michelle. they have also picked up signs of someone else. here again, keith morrison. 49 days after michelle le disappeared, we stumbled over a human bone in the same area her cell phone pinged off a nearby tower. as the searchers scoured the immediate area, they understood it couldn't be her. the bits of clothing weren't right and the bone was bleached by the sun, must have been there a long time. when they looked closely -- >> that's six foot something. it's not a 5'5" female.