sisters separated at birth, raised 5,000 mile as part, speaking different language, neither aware of the other before the random click of a mouse brought them back together as family. ABC's josh... See More
sisters separated at birth, raised 5,000 mile as part, speaking different language, neither aware of the other before the random click of a mouse brought them back together as family. ABC's josh Elliott charts that amazing coincidence and journey of discovery it sparked. Reporter: This is Samantha futerman adopted at the age of 4 months. Her life was shaped by those around her. One day, a random Facebook message arrived sent by a stranger, living 5,000 mile as way. Hey, my name is Annise. I'm French and live in Lon do. Reporter: A French fashion designer who had also been adopted. This is my brother. Reporter: Had seen Samantha in a youtube clip. My friend was watching P a video and saw you and thought we looked similar. Reporter: The two discovered they were born in the same Korean city on the same day. So a relationship born on social media moved to Skype. This is a really weird experience. This is so weird. Welcome to London heathrow airport. Reporter: That first meeting, three months later in London. First things that you said? Reporter: I pokes her head. To make sure she was real? Reporter: They found he shared not just a birthday, but a laugh. I'm going to ask you and answer at the same time. Coke or Pepsi. Coke. One pet peeve? When the shower curtain touches me I hate that. Oh, my god, that's the same. I hate that. Rtd despite the inarguable resemblan resemblance, they wanted to be sure. They got their DNA tested and it was the same. I got the DNA results, ma. I'm going out on a limb here. You're sisters, right? Yeah. Reporter: The birth parents identity and how the twins were separated remains a mystery. While they don't have a past. They have a future. Realizing I have a sister, identical twin sister, everything and anything is possible in the world. Reporter: Josh Elliott, ABC news, New York. What a lovely story.
This transcript has been automatically generated and may not be 100% accurate.