23 November 1960 (1960-11-23) – 18 January 1961 (1961-01-18)
The Citadel was a 1960 British television adaptation of A. J. Cronin's 1937 novel, The Citadel. The series was directed by John Frankau and produced by Peter Graham Scott. It starred Eric Lander as Dr. Andrew Manson, and Zena Walker as Christine, his wife. This television adaptation is entirely missing, i.e. all nine episodes are believed to be lost.