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Synopsis, Cast, and Extended Runtime Announced for The Reality War, the Doctor Who Series 15 Finale

Following Wish World, the BBC has not only announced the cast and synopsis for the Doctor Who Series 15 finale, but also that The Reality War will be an extra long episode!

Written by showrunner, Russell T Davies, and directed by Alex Sanjiv Pillai, the last episode of this run of stories will have a duration of one hour and six minutes, making it the longest episode of Series 15.

Here’s what to expect:

Tight as a noose, strands that have drawn across seasons and centuries now pull together for a devastating climax. The Doctor is doomed. Belinda is lost. Ruby is trapped. A battle rages across the skies as legends converge. Our brave, battered, beaten Doctor stands alone and helpless as the Unholy Trinity unleash their deadly ambition and the Underverse rises. The Doctor, Belinda and Ruby must reunite and risk everything in the quest to save one innocent life.

And here’s who’s joining Ncuti Gatwa (the Fifteenth Doctor), Varada Sethu (Belinda Chandra), and Millie Gibson (Ruby Sunday) in The Reality War:

  • Archie Panjabi: The Rani
  • Anita Dobson: Mrs Flood
  • Jonah Hauer-King: Conrad Clark
  • Sam Lawton: Winnie Petheridge
  • Ruth Madeley: Shirley Anne Bingham
  • Michelle Greenidge: Carla Sunday
  • Sienna-Robyn Mavanga-Phipps: Poppy
  • Jemma Redgrave: Kate Lethbridge-Stewart
  • Susan Twist: Susan Triad
  • Alexander Devrient: Colonel Christofer Ibrahim
  • Aidan Cook: The Vlinx
  • Yasmin Finney: Rose Noble
  • Bonnie Langford: Melanie Bush
  • Angela Wynter: Cherry Sunday
  • Faye McKeever: Louise Miller
  • Nila Aalia: Lakshmi Chandra

As you’d expect, basically the same people as in Wish World!

Many fans will no doubt be enjoying Wish World and The Reality War together n the big screen, as they’re being played at cinemas across the UK.

But otherwise, you can catch The Reality War on Saturday 31st May 2025 at 6:50pm on BBC1 and iPlayer in the UK, and on Disney+ in other territories.

Philip Bates

Editor and co-founder of the Doctor Who Companion. When he’s not watching television, reading books ‘n’ Marvel comics, listening to The Killers, and obsessing over script ideas, Philip Bates pretends to be a freelance writer. He enjoys collecting everything. Writer of The Black Archive: The Pandorica Opens/ The Big Bang, 100 Objects of Doctor Who, and Companions: More Than Sixty Years of Doctor Who Assistants.

Synopsis, Cast, and Extended Runtime Announced for The Reality War, the Doctor Who Series 15 Finale

by Philip Bates time to read: 1 min
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