NOVAفصل 9 افزودن تصویرشماره قسمت4The Hunt for the Legion KillerOverviewOne of the biggest investigations in medical history began when a mysterious killer disease broke out during independence celebrations in Philadelphia in 1976: Legionnaire's Disease. NOVA traces the search for a cause and cure—a search bedeviled by false trails, accusations of incompetence and cover-up, and increasing urgency as the death toll mounted.Air dateJanuary 31, 1982Runtime (min)60