The film was the second in an unofficial trilogy made by the same director and producer and starring Robert Taylor, coming between "Ivanhoe" (1952) and "The Adventures of Quentin Durward" (1955). All three were made at MGM's British studios at Borehamwood, near London and partly filmed on location. The cast included Robert Taylor as Sir Lancelot, Ava Gardner as Queen Guinevere, Mel Ferrer as King Arthur, Anne Crawford as Morgan Le Fay, Stanley Baker as Modred and Felix Aylmer as Merlin. The film uses the Welsh spelling for Arthur's nemesis, "Modred", rather than the more common "Mordred".