The plot of his illegitimate son Mordred to gain the throne, and Guinevere's growing attachment to Sir Lancelot, threatens to topple King Arthur and destroy his "round table" of knights.
Camelot is a 1967 American musical fantasy drama film directed by Joshua Logan and written by Alan Jay Lerner, based on the 1960 stage musical of the same name by Lerner and Frederick Loewe. It stars Richard Harris as King Arthur, Vanessa Redgrave as Guenevere, Franco Nero as Lancelot, David Hemmings as Mordred and Lionel Jeffries as Pellinore.