The Enemy Within

"The Enemy Within" was an alternate title for three different Doctor Who stories, one of them never produced.


 * One of the working titles for "The Invisible Enemy" was "The Enemy Within," and it was referred as such on the Doctor Who sound effects LP released by the BBC in 1977.


 * The working title for an unproduced storyline by Christopher Priest commissioned by John Nathan-Turner and script editor which would have appeared in Season 19. The storyline would have concerned the true source of the power of the TARDIS, an octopus-like creature which subsisted on fear.


 * "The Enemy Within" was also proposed as a title by producer Philip Segal for the 1996 television movie at a Doctor Who fan convention. Given the glib nature in which the title was thrown out, most fans do not use it and simply refer to that adventure as "The TV Movie."