Mysteries in the archives, ten investigations into ten events of the twentieth century that have marked our memory and our imagination. What do the archival images tell us? What are their origins, their hidden meaning? Ten unpublished surveys reveal the secrets of audiovisual archives. "Images tell stories, we tell the story of images." Viallet examines films that are often forgotten or ignored, shot during historical events: Marilyn Monroe's tour of Korea in 1954, the American atomic tests at Bikini in 1946, the crossing of the Atlantic by aviator Charles Lindbergh in 1927, the entry of General de Gaulle into Paris in 1944, the funeral of John F. Kennedy in 1963 ... All of them fulfill a decisive function in the great evolutionary narrative of the television epic. Viallet skips over and over again the sequences, zooms in on details, explains the meaning of this or that object, draws the eye to what to see behind the facade.