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The Flash S03E17, Duet (II)S03E17

The Flash · Season 3

The Flash season 3 episode 17: Duet (II)

Aired 21 March 201743 minRated TV-PG

6.7TMDB · 41 votesMark watched

Where to watch The Flash Season 3 in Australia

The Flash season 3 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 $27.99.

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Free

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Availability checked 16 November 2026.

What happens in “Duet (II)”

Barry and team are surprised when Mon-El and Hank Henshaw arrive on their Earth carrying a comatose Supergirl who was whammied by the Music Meister. Unable to wake her up, they turn to Team Flash to save her. However, the Music Meister surprises The Flash and puts him in a similar coma, one that Team Flash can't cure. Kara and Barry wake up without their powers in an alternate reality where life is like a musical and the only way to escape is by following the script, complete with singing and dancing, to the end. The crossover starts on Supergirl S02E16 Star-Crossed (I).

Episode summary: TMDB.

Before you watch

  • It is episode 17 of 23 of season 3, so watch episodes 1 to 16 first.
  • It runs about 43 minutes.
  • Directed by Dermott Downs, written by Andrew Kreisberg, Greg Berlanti, Todd Helbing and Aaron Helbing.
  • TMDB users rate it 6.7 out of 10 (41 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 KreisbergGreg BerlantiTodd HelbingAaron Helbing

Credits: TMDB.

More from The Flash Season 3

Previous · S03E16Into the Speed Force14 March 2017Next · S03E18Abra Kadabra28 March 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 3The 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.