S3·E21 Cause and Effect
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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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 episode follows the standard broadcast runtime for The Flash.
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....