What is this about? NM
http://www.worldcommunitygrid.org/ You can help change the world.
This was a very popular teen fiction novel in the 80's written by Lois Duncan.
http://www.amazon.com/Stranger-My-Face-Lois-Duncan/dp/0440983568
Its about a girl who finds out she has a twin. This was one of my favourite novels when I was younger.