Clone may not be the right word. From what I've heard - if you go home, it'll be like you never left and you'll forget this place. At least that was how it worked on the island. With the man dead and the girl gone, I don't know who's doing it now. We may never know.
I take it their names aren't in your phone? You could try searching the internet on your phone, but we may be in a different point in time then what you're from.