Shakespeare has appeared in one earlier "Doctor Who" episode, and the Doctor has also mentioned prior meetings. The Bard is seen by the Doctor and his companions on the screen of their Time-Space Visualiser in "The Chase" (1965), conversing with Elizabeth I; in "Planet of Evil" (1975), the Fourth Doctor mentions having met Shakespeare, and in "City of Death" (1979) he claims that he helped transcribe the original manuscript of "Hamlet"; and in "The Mark of the Rani" (1985) the Sixth Doctor says "I must see him again some time".