Oxygen (TV story)

 was the fifth episode of the tenth series of Doctor Who produced by BBC Wales.

The episode is most notable for showing the risks the Doctor places himself in to save his friends, in this case saving Bill robs him of his sight, and even though it seemed temporary and was seemingly fixed it's revealed that this isn't the case, as such the Doctor has become permanently blind.

Synopsis
The Twelfth Doctor, Bill and Nardole investigate a strange spaceship, but are interrupted by walking dead in spacesuits... will they make it out alive? And how much does air actually cost?

Plot
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Cast

 * The Doctor - Peter Capaldi
 * Bill - Pearl Mackie
 * Nardole - Matt Lucas
 * Ivan - Kieran Bew
 * Tasker - Justin Salinger
 * Dahh-Ren - Peter Caulfield
 * Abby - Mimi Ndiweni
 * Ellie - Katie Brayben

Crew
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Story notes

 * On The Fan Show, Jamie Mathieson jokes that the Twelfth Doctor's hair is "chalky blonde", rather than grey.
 * On The Fan Show, Jamie Mathieson worried that this episode would turn out "too political".
 * On The Fan Show, Jamie Mathieson said that an ongoing joke on set was calling Peter Caulfield "Blue Peter", due to his character being blue. This was a reference to Blue Peter.
 * Two references to Star Trek are made:
 * The Doctor makes a speech about space being "the final frontier". A similar speech is made in Star Trek.
 * Nardole mentions the "Swish Swish" sound the doors always makes. The Doctor says he hates that noise.
 * The blackboard from TV: The Pilot that was also used in Class reappears.

Ratings
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Filming locations
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Production errors
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Continuity

 * The Doctor wears his sonic sunglasses again. (TV: The Witch's Familar - The Husbands of River Song, The Pilot)
 * Nardole once more stresses the Doctor's oath to stay on Earth to guard the vault. (TV: The Pilot, Smile, Thin Ice, Knock Knock)
 * The sonic screwdriver is broken. (TV: The Visitation, Smith and Jones, The Eleventh Hour, A Christmas Carol)
 * The Doctor once more gives a lecture. (TV: The Pilot) This time about space.
 * The Doctor and his companions are almost sucked into the vacuum of space. (TV: The Impossible Planet, Voyage of the Damned)
 * The Doctor previously faced an enemy that hijacked spacesuits to control themselves. (TV: Silence in the Library/Forest of the Dead)
 * Bill mentions being on the receiving end of racism. (TV: Thin Ice)

DVD releases
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Blu-ray releases
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Digital releases
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