Olympia Dukakis narrates this absorbing documentary examining the scourge wrought by polio across America from the 1910s to the early 1950s. Through insightful interviews and archival footage, the war against the disease─from March of Dimes crusades to the development of a vaccine by Jonas Salk─is traced. 90 min. Soundtrack: English; biographies; bonus shorts; photo gallery; theatrical trailers.