World-renowned neuroscientist Adrian Owen reveals his controversial, groundbreaking work with patients whose brains were previously thought vegetative or non-responsive but turn out—in up to 20 percent of cases—to be vibrantly alive, existing in the “Gray Zone.” Following Owen’s journey of exciting medical discovery, INTO THE GRAY ZONE asks some tough and terrifying questions, such as: What is life like for these patients? What can their families and friends do to help them? What are the ethical implications for religious organizations, politicians, the Right to Die movement, and even insurers? And perhaps most intriguing of all: what defines a satisfying life?