Conception and writing In early 1965,
Doctor Who script editor
Dennis Spooner asked
Terry Nation to write a six-part serial featuring the
Daleks, wanting to recreate the success of
The Dalek Invasion of Earth (1964). The Daleks' return was expected to boost related toy sales in the
Christmas period. Nation was granted an additional episode in February to act as a "trailer" for the serial, which became "
Mission to the Unknown" (1965). Spooner departed
Doctor Who in April to work with Nation on
The Baron (1966–1967); his successor,
Donald Tosh, commissioned Nation's six-part serial under the provisional title
Dr Who and the Daleks in May. The
BBC's director of television,
Kenneth Adam, suggested the serial be expanded to thirteen episodes; head of drama
Sydney Newman formally requested an expansion to twelve, to which producer
Verity Lambert agreed if Nation and Spooner could share writing duties due to their work on
The Baron. The twelve-part serial was confirmed by mid June. Lambert's successor,
John Wiles, was unhappy with the extension and threatened to resign; Tosh, who was also unhappy, persuaded him to stay. Following the extension, in July, Tosh commissioned Nation to write the first six episodes, and Spooner to write the remaining six; they soon swapped the sixth and seventh episodes, allowing each to write a
cliffhanger for the other to resolve. Tosh advised Spooner to write standalone sequences to link to Nation's cliffhangers later. Nation and Spooner met to discuss the storyline but mostly worked independently; their outline varied in length, with two pages for the first episode, a paragraph for the tenth, and a brief sentence for the twelfth. Nation's six draft scripts ran to 150 pages; however, Tosh recalled that Nation's drafts were short—running to around 15 minutes each, with the seventh episode at 21 pages (far shorter than the average 45)—and required expansion. Spooner had more time to work on his scripts, and Tosh felt they required less work as Spooner was a former script editor. Nation's scripts were delivered in August, and Spooner's in September. The prison planet—Desperus, dubbed "Devil's Planet"—is a reference to
Devil's Island, a French
penal colony. The seventh episode's broadcast on
Christmas Day prompted the production team to write a self-contained comedic story, believing viewers would be uninterested in a complex narrative. Tosh was inspired to make the episode a parody of the
police procedural series
Z-Cars after one of its writers,
Keith Dewhurst, turned down his request to write for
Doctor Who. Enquiries were made about using four
Z-Cars cast members (
James Ellis,
Brian Blessed,
Joseph Brady, and
Colin Welland) and production designer
Raymond Cusick asked to use its set;
Z-Cars producer
David Rose declined as the production schedules overlapped and he felt a festive story did not match
Z-Carss tone. The Doctor's
address to the audience at the end of the seventh episode—in which he says "Incidentally, a happy Christmas to all of you at home"—was written in the camera script, though Tosh and Wiles claimed it was improvised by Hartnell. Tosh criticised the address and felt it broke the audience's
suspension of disbelief. 40 years later,
Doctor Who introduced annual
Christmas specials with "
The Christmas Invasion" (2005). By June 1965,
Douglas Camfield was assigned to direct ''The Daleks' Master Plan''. Tosh persuaded Wiles to maintain Camfield as the sole director after the serial was extended to twelve episodes. Camfield often rewrote elements of the scripts during rehearsals; Tosh felt Camfield's work on the scripts made the serial a success. Camfield asked
Tristram Cary to compose music for the serial in July; Cary had worked on
The Daleks (1963–1964) and the two had collaborated on
Marco Polo (1965). Music was recorded at
IBC Studios for the first six episodes on 13 October, and for the final six on 23 October.
Brian Hodgson of the
BBC Radiophonic Workshop created 48 sound effects for the serial in September 1965. Production assistant Viktors Ritelis was credited for the final episode at Camfield's request, as he felt he had helped immensely. Exhausted from production, Camfield decided he would not return to direct
Doctor Who for some time. Production designers Cusick and Barry Newbery collaborated on the serial due to its length; it was Cusick's final story for
Doctor Who, as he wanted to return to drama.
Casting and characters (pictured in 2010) in
Doctor Who. He returned in 1968 in a different role,
Brigadier Lethbridge-Stewart, who became a recurring character. Wiles and Tosh decided the serial should kill new
companion Katarina for
shock value, as writers of subsequent stories faced difficulty fitting her in, and they felt viewers may be unable to identify with her. They decided she would be replaced by another woman, Sara Kingdom, who would be killed in the serial's climax. Katarina and Sara were the first companions to be killed in
Doctor Who, and the only ones to do so on-screen until
Earthshock (1982). Nation had intended for Sara to feature in an American spin-off series with the Daleks, but added her to ''The Daleks' Master Plan
instead when the series did not emerge. Inspired by the character Cathy Gale of The Avengers'', the scripts described her as "about twenty-five, very beautiful". She was originally written as Bret's lover, but was rewritten as his sister. Nation envisioned Bret Vyon as "the
007 of space". The frequent cast changes left Purves worried for his role; he felt he might be replaced by Nicholas Courtney. Courtney, who had earlier been considered to play
King Richard in
The Crusade (1965), was cast as Bret in September. Courtney returned in the 1968 serial
The Web of Fear to play
Brigadier Lethbridge Stewart, who later became a prominent recurring character in
Doctor Who. The week after Courtney's casting, Jean Marsh—who had played
Joanna in
The Crusade, for which Adrienne Hill had been considered—was cast as Sara. Hill and Marsh's casting was announced in November 1965. Some character names were altered to reflect the story's futuristic setting; Bret Vyon was originally Brett Walton, and the prisoner Bors was originally Breton. The Egyptian characters Khepren, Hyksos, and Tuthmos were named after
Chephren,
Hyksos, and
Thutmose, respectively. Make-up artist Joan Barrett shaved the heads of six actors portraying Chen's workers, the Technix, for which they were paid double. Tosh expanded Mavic Chen's role when adding to Nation's draft scripts. Spooner requested the reintroduction of the Monk from
The Time Meddler (1965), which he had written; he felt the character could provide humour and Butterworth's performance could alleviate Hartnell's work. Butterworth was keen to reprise his role. James Hall (cast as Borkar) had previously appeared in
The Reign of Terror (1964), while Malcolm Rogers (who portrayed a policeman) was in
The Chase (1965), and Roger Avon, Reg Pritchard, and
Bruce Wightman (who played Daxtar, Man in Mackintosh, and Scott, respectively) had appeared in
The Crusade.
Sheila Dunn, who portrayed Blossom Lefavre, was Camfield's wife; they had married the preceding August. The cowboy was portrayed by William Hall, the
Evening Newss film critic who had been Camfield's
best man at his wedding; the role was uncredited. Hall later married Jean Pestell, who portrayed a saloon bar girl in the same episode. Malpha, who had been portrayed by Robert Cartland in "Mission to the Unknown", was played by an uncredited Brian Edwards in the second episode and
Brian Mosley in the eleventh.
Filming (pictured in 2005) from October 1965 to January 1966. Early
35 mm filming began on Stage 3A/B of the
BBC Television Film Studios on 27 September 1965, including Katarina's death in the evening—Hill's first work on the series. Much of the model filming was delayed due to unavailability of props and sets. In filming Sara's death scene on 6 October, Camfield was inspired by Ayesha's death in
H. Rider Haggard's novel
She (1887). Rehearsals for the serial started on 18 October, and weekly recording began on 22 October in the
BBC Television Centre's Studio 3. The first episode's recording ran under schedule, which Wiles attributed to difficulty in timing special effects. Filmmakers at
MGM Borehamwood, who were working on
Stanley Kubrick's
2001: A Space Odyssey (1968), contacted the production team after the fifth episode's broadcast to enquire about Camfield's special effects shots, including floating corpses in space.
Sam Rolfe, the American screenwriter known for creating
The Man from U.N.C.L.E. (1964–1968), attended camera rehearsals for the ninth episode, and noted Daleks would likely be popular in the United States. Marsh became known for laughing during rehearsals; she was once banished from the studio until she gathered herself. Hartnell's worsening health and sadness from Lambert's departure led to difficulties in his relationship with Wiles, prompting the latter to remove him from filming where possible; the Doctor was removed from most of the eleventh episode and his dialogue inherited by Steven. Hartnell became irritable during production, partly due to the removal of his usual chair during rehearsals; the crew temporarily
walked out after he upset his
dresser. Hartnell was upset by a last-minute script change in which the Doctor unlocks the TARDIS using his ring, a usage which he felt had not been established in prior stories. On 13 December, Hartnell announced he would retire from the role at the end of the season; he backtracked the following day, stating he would be willing to stay for another two-and-a-half years, at which point he hoped the programme would be broadcast in colour. Rehearsals and recording were skipped in the week of 20 December due to the Christmas break. The final episode was recorded on 14 January 1966. Recording underran, which Wiles attributed to "policy reasons" requiring the removal of two shots of Sara's death. Both Tosh and Wiles had submitted their resignations from
Doctor Who by the end of production in January 1966, Wiles partly due to his strained relationship with Hartnell and desire to return to writing and directing, and Tosh partly out of loyalty to Wiles and desire to do other work. The serial was granted an additional sum of , which was allocated to the first two episodes in addition to the standard budget. Recording for the twelve episodes cost a total of (). == Reception ==