Sir Lancelot was one of a series of cheaply made but highly crafted TV shows made for the new ITV network in England in the 1950's.
In all of Arthurian legend, the most famous of the Knights of the Round Table is undoubtedly Sir Lancelot. This series, painstakingly researched by the History and Literature Departments of Oxford University, re-creates some of the notable exploits of the famous knight, as well as the deeds of the other members of King Arthur's court.
Synopsis episode 25 :
While on a visit to castle Lamorack, Sir Lancelot and Merlin try to help their host when he receives a note threatening his daughter's life. Merlin learns that the note is false, and written by the girl herself in a bid for attention. Later the girl disappears. Another notes arrives and this time it's genuine..