this one more time. and she comes back and she goes, honey, i was wrong the first time, she says, this person is anywhere between 5'9" and 6'1". i said, oh, my gosh, i think i've hit paydirt. >> she dot dna from david's mother, waited for a lab to compare the samples. and ten days later, detective velasquez called the testing facility. >> she comes to the phone and she says, i hope you're sitting down. and i said, why? you've got a 100% match. oh, my gosh?! i said, what? because i'm not believing that i'm hearing what i'm hearing. >> 15 years after he disappeared, david jackson had finally been found. question now was, what happened to him? how did he end up here? coming up, a strange coincidence or was it? >> it's an eerie feeling, you know, that he was in that area that i didn't even know about. >> when "buried clues" continues.