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The Flash S06E16, So Long and GoodnightS06E16

The Flash · Season 6

The Flash season 6 episode 16: So Long and Goodnight

Aired 21 April 202042 minRated TV-PG

6.6TMDB · 12 votesMark watched

Where to watch The Flash Season 6 in Australia

The Flash season 6 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 $44.99 and Prime Video Store from $29.99.

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Free

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Availability checked 16 November 2026.

What happens in “So Long and Goodnight”

After Black Hole hires Rag Doll to kill Joe, Singh suggests he go into Witness Protection but Joe refuses to stop investigating Carver. While investigating Carver with Cisco, Ralph runs into Sue. Iris becomes suspicious of Eva.

Episode summary: TMDB.

Before you watch

  • It is episode 16 of 19 of season 6, so watch episodes 1 to 15 first.
  • It runs about 42 minutes.
  • Directed by Alexandra La Roche, written by Thomas Pound and Kristen Kim.
  • TMDB users rate it 6.6 out of 10 (12 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
Alexandra La Roche
Writers
Thomas PoundKristen Kim
Guest stars
Kayla Compton as Allegra GarciaPhil LaMarr as Rag Doll (voice)Troy James as Peter Merkel / Rag DollEric Nenninger as Joseph CarverEfrat Dor as Eva McCulloch / Mirror MonarchRebecca Roberts as January GaloreElizabeth Weinstein as Financial AdvisorAndrew J. Hampton as Maurice

Credits: TMDB.

More from The Flash Season 6

S06E15Previous · S06E15The Exorcism of Nash Wells17 March 2020
S06E17Next · S06E17Liberation28 April 2020
  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

Every episode of Season 6The 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.