returning to our story, here again is dennis murphy. meredith emerson and her lab ella were two days missing on georgia's blood mountain early in a freezing january of 2007. her friends alerted the authorities and people from all over the greater atlanta area were scouring the hiking trails. so many volunteers they couldn't use all of them. >> people just showed up and just said, i have a daughter who likes to hike, i have a sister who could have been meredith easily. and they just volunteered their time. >> but the search in the national forest had become something more ominous than a lost hiker incident. meredith had been last seen in the company of an unsavory looking stranger. law enforcement was absolutely to identify him. the tip came from john tabor, an atlanta businessman. he was watching the continuing news coverage of missing