The only thing scarier than turning your science experiment in, is turning your sister into one! See Invisible Sister, premiering Friday, October 9 at 8p on Disney .\r<br>\r<br>The only thing scarier than turning your science experiment in, is turning your sister into one! See Invisible Sister, premiering Friday, October 9 at 8p on Disney .\r<br>\r<br>\r<br>\r<br>The only thing scarier than turning your science experiment in, is turning your sister into one! See Invisible Sister, premiering Friday, October 9 at 8p on Disney .
