The Crimson Horror (in-universe)

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The back cover of the Series 7 DVD boxset. (COMIC: The Girl Who Loved Doctor Who)
You may be looking for the real world TV story.

In a parallel universe in which the Doctor's life was a work of fiction, The Crimson Horror was the thirteenth episode of the seventh series of the television show Doctor Who. It was released as part of the Doctor Who Series 7 DVD boxset. (COMIC: The Girl Who Loved Doctor Who [+]Loading...["The Girl Who Loved Doctor Who (comic story)"])