Prologue (TV story)

Prologue is a mini-episode that serves as a prequel to the first episode of the first series of The Doctor.

Synopsis
''Donna Noble's metacrisis powers are reawakening. When the Doctor learns this, he enlists the help of Jack Harkness and River Song to protect his friend from burning up and dying. Meanwhile, an old enemy decides to use Donna's unstable Time Lord abilities for nefarious purposes.''

Cast

 * The Doctor - Matt Smith
 * Donna Noble - Catherine Tate
 * Captain Jack Harkness - John Barrowman
 * River Song - Alex Kingston
 * The Master - Alan Cumming
 * Elder Ood - Ruari Mears
 * Voice of Elder Ood - Brian Cox

Crew

 * Written by - The Time Lord

Story notes

 * The Doctor leaves behind a coral-like piece of the TARDIS for Donna so she can grow her own version of the time machine. This was originally done by the Tenth Doctor for his clone in a deleted scene from Journey's End.

Continuity

 * The Doctor learns of Donna's reawakening metacrisis powers over the course of the twelve years it takes him to return for his new companion, Amy Pond. (TV: The Eleventh Hour)