The Unicorn and the Wasp
Series 4 Episode 7
In 1926, Agatha Christie disappeared for 10 days. Was it amnesia? A nervous breakdown? Or perhaps a Giant Alien Wasp? The Doctor and Donna join forces with the world's most famous crime novelist to encounter a body in the library, poisoned cocktails and a Vespiform seeking revenge.
Trivia
  • When the housekeeper is lying on the ground, the stone statuary moves on her stomach as she breathes, and then it is moved by Agatha Christie when she bumps it with her knee.
  • The idea for this episode, a murder mystery story featuring Agatha Christie, came from producer Phil Collinson.
  • David Tennant's dad, Alexander McDonald, can be seen in the role of a a footman at the beginning of the episode.
Memorable Quotes
  • The Doctor: A giant wasp! Well, there are tons of emorphorous insectivorous lifeforms, but none in this galactic sector.
    Agatha Christie: I think I understood some of those words... enough to know that you're completely potty!
  • Agatha Christie: Agatha Christie.
    Donna: What about her?
    Agatha Christie: That's me.
    Donna: No. Way!
  • Donna: There's a giant wasp!
    The Doctor: What do you mean a giant wasp?
    Donna: I mean a wasp... that's giant!
    Agatha Christie: It's only a silly little insect!
    Donna: When I say giant, I don't mean big... I mean flipping enormous!
Doctor Who Series 4, Volume 3 DVD DVD
Doctor Who Series 4, Volume 3

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