When did The Flash Season 2 Episode 21 air?
The Flash Season 2 Episode 21 aired on May 10, 2016.


The fastest man alive.
After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.

With Barry gone, the team must figure out a way to handle the return of an old enemy - Girder. Realizing Girder is retracing his steps from his last attack, Iris volunteers to act as bait to trap him in S.T.A.R. Labs. Meanwhile, Barry fights to return to his old life.
Direct answers for episode-level questions and details.
The Flash Season 2 Episode 21 aired on May 10, 2016.
This episode runs for approximately 41 minutes.
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