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The governor, Colonel Trenchard, says ships have been disappearing mysteriously at sea. The Doctor and Jo visit the Master in his high-security prison on an island off the south coast of England.
5.1 Cultural references from the real world. Ultimately, they are betrayed by all three like their land-based cousins, it is the humans who hurt them the most. The Sea Devils are caught between the Master, the Doctor and the humans. Like many of Hulke's stories, it included a moral dimension. The phrase became associated with the Third Doctor, so he used it again in The Five Doctors some eleven years later, although between seasons 7 and 11 Pertwee did use a shortened version of the phrase, "reverse the polarity", several times. This story saw the only use of the catchphrase "reverse the polarity of the neutron flow" during the Pertwee era. Its significance was attested to by its inclusion in 2013's Doctor Who at the Proms, where it was one of five pieces of incidental music performed as representative of the show's original run. Malcolm Clarke's electronic score was one of the serial's signatures. Director Michael Briant's solution was to not hire regular incidental music composer, Dudley Simpson, and have the score created by the BBC Radiophonic Workshop. It was in fact a model, adapted to show the features they were secretly testing.Įxpensive location filming left The Sea Devils with a budgeting problem. Shortly after broadcast, the BBC was visited by officials from the MOD who believed a top-secret submarine had been used in the show. Many of the extras that played the navy personnel were active duty sailors. He found the Ministry of Defence eager to take part. Letts had secured the involvement of the Royal Air Force for The Mind of Evil and decided to try to do the same with the Royal Navy. This is the first mention that he and the Doctor were once friends. This story joins him where The Dæmons left off, in prison. However, this period was still well in advance of humanoid life.Īfter the Master appeared in all five stories of season 8, Letts decided to restrict him to a few appearances each year. To answer the insistence by fans that the Silurian era could not have spawned man-sized life, Hulke introduced a line in which the Doctor says they should correctly be called Eocenes. Unlike their earlier counterparts, these "Sea Devils" were given clothing, designed by Maggie Fletcher. Rather than merely bringing back the Silurians, Hulke invented an aquatic version called the Sea Silurians.
It marked the first appearance of the Sea Devils and the reappearance of the Master, now plotting to escape confinement from a maximum security prison.īarry Letts and Terrance Dicks had decided they wanted a sea-based story and asked Malcolm Hulke to write it.
The Sea Devils was the third serial of season 9 of Doctor Who.