They are called subclones: human clones with no brain tissue and therefore no messy ethical problems. They are stem cell donors, factory workers, cleaners, slaves, works of art - their uses limited only by their owners' imaginations.
Unfortunately.
This is the story of Anais Booker, creator of the subclones; of the people whose lives she touched, and of the terrible mistake that she would spend the rest of her life struggling to undo...
Nobody changes the world on purpose.