joohee finds him. all grown up now, married with children, he now holds the key allen's twins, back in america. the doors were locked, unless jaem gave you the key, in essence, with his permission. >> yes. >> reporter: but there's a problem. even after all these years, jaem resents allen thomas, the man who once adopted him because he believes allen abandoned them. when you first contacted jaem, he wanted nothing to do with you. >> he said no. >> reporter: joohee goes to visit jame and his wife in person. jame remembers the day his little half brother and sister vanished. >> translator: i came home after school and they were gone. i asked my mother about the somewhere, so i just accepted that. insight about why connie may adoption. what would it have been like for these children in, growing up in south korea, these g.i. babies? been disowned by their family if they -- >> reporter: if they brought home a mixed-race baby? it was considered that bad. >> it was, yes. >> reporter: still relucta, jame is fin

>> reporter: abc seoul bureau chief joohee cho says jame and his wife believe connie regretted giving the twins up for adoption. it seems to have haunted her until the day she died. >> she would just go to anyone in the neighborhood and say, "if you see any twins, korean-american twins, looking for mrs. pae, that's me, that's me. make sure that they call me." and she would just look over the photo albums, and her daughter-in-law said she'd just cry and just touch the photos. ginseng box. it's a tin time capsule stuffed with mementos of a life that might have been. snapshots of connie. letters from allen. and look at this, the savings bonds allen sent all those years ago. she had saved them all her life. is it possible she planned to give this modest inheritance to her twins one day when they returned?