Season 0 - Episode 484

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Script editor Christopher H. Bidmead, talked about the initial development of the Master trilogy (as it would later be known). It included The Keeper of Traken, Logopolis and Castrovalva. John Black, the director of The Keeper of Traken, talked about casting Geoffrey Beevers as the Master. The rest of the documentary was devoted to the discussion of the motives, character and the role of the Master, played by Geoffrey Beevers.