Trivia: Ron Howard's father, Rance, makes a cameo as one of the Cardinals locked in conclave. (00:32:10)
Character mistake: While examining "Diagramma della Verita" in the Vatican archives, Langdon is careful to use a cotton glove and a pair of tongs to turn the pages. But when he returns later to search the Bernini texts for clues about the "fire" church, he turns the book pages with his bare hands. (00:36:30 - 01:04:55)
Character mistake: When Robert and Vittoria arrive at the Vatican archives for the first time, there is a plaque on which it says "Il Processo Galileano", which is misspelled, as the right pronunciation is "GALILEIANO", with the "i" between the "e" and the "a."
