Free Zone followers adhere to the teachings of the man who developed a system known as what?
Free Zone (Scientology):  Such practitioners range from those who closely adhere to the original teachings of Scientology's founder, L. Ron Hubbard, to those who have adapted their practices so far that they are almost unrecognizable as Scientology. L. Ron Hubbard:  After establishing a career as a writer, becoming best known for his science fiction and fantasy stories, he developed a system called Dianetics which was first expounded in book form in May 1950.
Dianetics