Trivia / Doctor Who S35 E9 "Sleep No More"

• Completely Different Title: The French title is "Dans les Bras de Morphée" ("In Morpheus's Arms" after Morpheus, the god of dreams in Classical Mythology).
• Production Posse: Mark Gatiss' The League of Gentlemen collaborator Reece Shearsmith guest stars as Rassmussen.
• What Could Have Been: Showrunner Steven Moffat commissioned a follow-up story from Mark Gatiss before this one even aired, but it was ultimately replaced by "Empress of Mars" when Series 10 was actually produced.
• You Look Familiar:
  • Reece Shearsmith, who played Rasmussen, previously played Patrick Troughton in An Adventure in Space and Time.
  • Tom Wilton appeared as a Zygon in "The Zygon Invasion/The Zygon Inversion".

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