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Doctor Who Introduces Lux Imperator in Groundbreaking Episode

The Fifteenth Doctor and Belinda Chandra confront segregation, cosmic gods, and meta storytelling in a bold new chapter of Season 15.

The Doctor (Ncuti Gatwa) and Belinda Chandra (Varada Sethu) shortly before their TV close-up.
Ncuti Gatwa and Varada Sethu in Doctor Who Season 2 Episode 2
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Ncuti Gatwa and Varada Sethu in 1950s clothing walking up the aisle of a cinema in Doctor Who episode Lux

Overview

  • Episode 'Lux' aired on April 19, 2025, featuring the Doctor and Belinda navigating 1952 Miami's segregation and battling Lux Imperator, a god of light.
  • Alan Cumming voices Mr. Ring-a-Ding, revealed to be Lux Imperator, expanding the season's Pantheon of Gods storyline.
  • The episode delivers the series' most ambitious meta moment as the Doctor and Belinda break the fourth wall to interact with fictional fans.
  • Recurring antagonist Mrs. Flood, portrayed by Anita Dobson, makes a cryptic cameo, hinting at the season finale's pivotal date, May 24, 2025.
  • Showrunner Russell T Davies continues to blend social commentary, cosmic stakes, and innovative storytelling, reflecting contemporary diversity with the series' first non-white lead duo.