La Cittadella is a 1964 Italian miniseries based on A. J. Cronin's 1937 novel, The Citadel, and produced by Radiotelevisione Italiana. It was directed by Anton Giulio Majano and stars Alberto Lupo as Dr. Manson and Anna Maria Guarnieri as his wife, Christine. Other television versions include an American, another Italian, and two British adaptations.