When I was younger I saw a film (or it was possibly a book) about a family that had to go into the witness protection program and the daughter hated it cos she had to have all her long hair chopped off and wasnt allowed to play tennis anymore (she was like a pro) and the son had to wear contacts cos he had one blue eye and one brown but in the end the bad guys find them cos the girl ends up in the paper cos she plays tennis, cant remember anymore, ring any bells with anyone?