S3·E21 Cause and Effect
- Episode
- Season 3, Episode 21
- Air Date
- May 9, 2017
- Runtime
- 42 minutes
- Director
- David McWhirter
- Writers
- Lauren Certo, Judalina Neira
- Score
- 7.4/10 (34 TMDB votes)
- Story Type
- Core Character Arc
Narrative Classification: Standard continuity chapter maintaining character development and season progression.
Synopsis
Barry takes drastic measures to stop Savitar. Meanwhile, H.R. continues to push Tracy Brand to design the trap for Savitar and Killer Frost returns with an interesting proposal.
Episode recap
In the episode Cause and Effect, Barry takes drastic measures to stop Savitar. H.R. continues to push Tracy Brand to design a trap for Savitar. Meanwhile, Killer Frost returns with an interesting proposal. The actions of the characters in this episode are driven by their efforts to stop Savitar.
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Director & writers
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Frequently Asked Questions
When did Season 3 Episode 21 of The Flash air?
Season 3, Episode 21 ('Cause and Effect') originally aired on May 9, 2017.
How long is Season 3 Episode 21 ('Cause and Effect')?
The runtime for this episode is approximately 42 minutes.
What happens in The Flash Season 3 Episode 21?
Barry takes drastic measures to stop Savitar. Meanwhile, H.R. continues to push Tracy Brand to design the trap for Savitar and Killer Frost returns with an interesting proposal....
All The Flash episode ratings Season 3 Where to watch
Top-rated The Flash episodes
- S1E23 · Fast Enough ★ 8.4
- S1E15 · Out of Time ★ 8.3
- S1E20 · The Trap ★ 8.2
- S1E22 · Rogue Air ★ 8.2
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