Watch The Flash Season 3 Episode 21 Online

Cause and Effect

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Watch The Flash Season 3 Episode 21 online via TV Fanatic with over 7 options to watch the The Flash S3E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, Netflix, YouTube Purchase, Google Play, and Verizon On Demand.

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Episode Details

On The Flash Season 3 Episode 21, Barry takes drastic action to stop Savitar. How far is he willing to go to make sure the future never happens?


Rating: 4.2 / 5.0 (80 Votes)
Show:
The Flash
Season:
Episode Number:
21

The Flash Season 3 Episode 21 Quotes

It's all coming together! [pauses] In the worst way.

Cisco

Savitar Barry: [to Barry]: I forgot to tell you. My suit's cooler than yours.

The Flash Season 3 Episode 21

The Flash Season 3 Episode 21 Photos

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