This article is not part of the Holby universe.
This article covers a subject that is part of the real world, and thus should not be taken as a part of the Holby universe.
This episode is currently available on BBC iPlayer.
If you are a UK resident with a TV licence, you can watch this episode here.
"Retreat" is the 994th episode of Holby City and the 39th episode of the 21st series. It was preceded by "Circle of Life" and followed by "Divine Justice". The episode was directed by Steve Brett and written by Andy Bayliss.
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