west virginia. >> just on a hunch, i put in the father's name and i put in west virginia. >> an old city directory from a small town in west virginia pops up, and there, looking back at her from the dusty digital pages, john keller's biological parents, both of them. >> we have dewey and helen. they lived in the rear of a home called huntington, west virgina. we finally now have a starting point in this case. >> pam and john fly to west virginia. >> all right, ready? >> let's go. >> let's do this. good luck. >> hoorah, let's hit it. >> reporter: they drive around the town his parents once called home. they visit the post office. >> take exit 58. >> they stop at the office of vital records, hoping to get a look at his brother's birth certificate, but it's not there. they ask for directions to the house where his parents once lived. >> hello. got a question for you. we are trying to find an old address of 225 main street? >> i don't'tnow, actually. >> but even the mail carrier can't help. like john's brother, the house seems to have disappeared. the west virginia road trip yields no direct evidence of his brothe