• TheTVDB.com Season ID 473540
  • Created February 4, 2008
  • Modified January 20, 2024
When available, episode names will be translated into your preferred language. Otherwise they will be shown using the series' origin language.
Name First Aired Runtime Image
S04E01 Gently Upside Down
season finale
September 4, 2011
BBC One
90
S04E02 Goodbye China
season finale
September 11, 2011
BBC One
90

No artwork of this type.

No artwork of this type.

No artwork of this type.