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The Flash S02E17, Flash BackS02E17

The Flash · Season 2

The Flash season 2 episode 17: Flash Back

Aired 29 March 201641 minRated TV-PG

7.6TMDB · 54 votesMark watched

Where to watch The Flash Season 2 in Australia

The Flash season 2 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 $29.99.

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Free

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Availability checked 16 November 2026.

What happens in “Flash Back”

After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his speed, Barry decides to travel back in time and masquerade as his earlier self in order to get his arch-nemesis, Dr. Harrison Wells/Eobard Thawne, to teach him how to run faster. However, things don’t go as planned and Barry is stunned to face familiar foe Hartley Rathaway, as well as old friend Eddie Thawne. Iris makes peace with her past in order to embrace her future.

Episode summary: TMDB.

Before you watch

  • It is episode 17 of 23 of season 2, so watch episodes 1 to 16 first.
  • It runs about 41 minutes.
  • Directed by Alice Troughton, written by Todd Helbing and Aaron Helbing.
  • TMDB users rate it 7.6 out of 10 (54 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
Alice Troughton
Writers
Todd HelbingAaron Helbing
Guest stars
Rick Cosnett as Eddie ThawneGuy Christie as CopAndy Mientus as Hartley Rathaway / Pied PiperKeiynan Lonsdale as Wally WestTeddy Sears as Jay Garrick / Zoom

Credits: TMDB.

More from The Flash Season 2

Previous · S02E16Trajectory22 March 2016Next · S02E18Versus Zoom19 April 2016
  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 2The 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.