The devastating biological scourge of the Middle Ages is revisited in this investigative program. Tracing its deadly path throughout Europe and its horrifying impact on the population at large, this History Channel documentary includes riveting firsthand accounts taken from diaries and journals, incredible tales of how the disease was fought and of the religious fervor spawned by its disastrous spread. Is the modern era any better prepared for such threats? 100 min. Soundtrack: English.