The Daleks' Master Plan The Daleks' Master Plan is a serial in the British science fiction television series Doctor Who. The twelve episodes (the most of any Doctor Who serial, excluding the four 1986 stories that were together called The Trial of a Time Lord) were aired from November 13, 1965 to January 29, 1966. This serial marks the final appearance of Adrienne Hill as companion Katarina, the only appearance of Jean Marsh as Sara Kingdom and the first ever death of a companion -Missing episodes Currently, only episodes 2, 5, and 10 are known to exist. All the episodes were recorded on and transmitted from magnetic videotape. Subsequently, BBC Enterprises had 16mm film telerecordings made for potential overseas sales. However, the Christmas episode "The Feast of Steven" was excluded from this and the story offered for sale was an 11-part version. The original videotapes of Episodes 1, 2, 4, 5, 7, 8 and 9 are listed among the first Doctor Who episodes ever ordered to be wiped, on 17 August 1967. At this point, "The Feast of Steven" became the first episode of Doctor Who to be seemingly lost forever.