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The Flash S04E08, Crisis on Earth-X (III)S04E08

The Flash · Season 4

The Flash season 4 episode 8: Crisis on Earth-X (III)

Aired 28 November 201742 minRated TV-PG

7.4TMDB · 37 votesMark watched

Where to watch The Flash Season 4 in Australia

The Flash season 4 is streaming in Australia on Prime Video (subscription), HBO Max (subscription) and Stan (subscription), and free on 9Now. You can also buy it on Apple TV from $29.99, Fetch TV from $29.99 and Prime Video Store from $24.99.

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Availability checked 16 November 2026.

What happens in “Crisis on Earth-X (III)”

Barry and Iris's wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow, Supergirl, The Flash and White Canary - lead their teams into battle to save the world. The crossover starts on Supergirl S03E08 Crisis on Earth X (I) and Arrow S06E08 Crisis on Earth X (II). It continues on DC's Legends of Tomorrow S03E08 Crisis on Earth X (IV).

Episode summary: TMDB.

Before you watch

  • It is episode 8 of 23 of season 4, so watch episodes 1 to 7 first.
  • It runs about 42 minutes.
  • Directed by Dermott Downs, written by Andrew Kreisberg, Todd Helbing and Marc Guggenheim.
  • TMDB users rate it 7.4 out of 10 (37 votes).

The Flash trailer

The official trailer for the series (no preview of this episode has been published).

The Flash trailerPlay video: The Flash trailer

Cast and crew of this episode

Director
Dermott Downs
Writers
Andrew KreisbergTodd HelbingMarc Guggenheim
Guest stars
Emily Bett Rickards as Felicity SmoakDominic Purcell as Mick Rory / Heat WaveFranz Drameh as Jefferson 'Jax' Jackson / FirestormJeremy Jordan as Winn SchottRussell Tovey as Ray Terrill / The RayCaity Lotz as Sara Lance / White CanaryVictor Garber as Dr. Martin SteinStephen Amell as Oliver Queen / Green Arrow / Dark Arrow

Credits: TMDB.

More from The Flash Season 4

Previous · S04E07Therefore I Am21 November 2017Next · S04E09Don't Run5 December 2017
  1. E01
  2. E02
  3. E03
  4. E04
  5. E05
  6. E06
  7. E07
  8. E08
  9. E09
  10. E10
  11. E11
  12. E12
  13. E13
  14. E14
  15. E15
  16. E16
  17. E17
  18. E18
  19. E19
  20. E20
  21. E21
  22. E22
  23. E23

Every episode of Season 4The Flash episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.