Desc: The Autism Enigma: Directed by Marion Gruner, Christopher Sumpton. With Andy Bolte, Ellen Bolte, Derrick MacFabe, Jeremy K. Nicholson. The Autism Enigma looks at the progress of an international group of scientists who are looking for clues to the baffling disorder by examining the amazingly diverse and powerful microbial ecosystem that's an essential part of the human gastrointestinal tract, and the extraordinary efforts of parents who have been relentlessly pushing science forward in hopes of finding answers for their children's condition.