When did Hawaii Five-0 Season 1 Episode 21 air?
Hawaii Five-0 Season 1 Episode 21 aired on April 18, 2011.


Steve McGarrett returns home to Oahu, in order to find his father's killer. The governor offers him the chance to run his own task force (Five-0). Steve's team is joined by Chin Ho Kelly, Danny "Danno" Williams, and Kono Kalakaua.

When a crime lord moves against the family of an undercover NYPD detective who infiltrated his organization, it's up to Five-0 to stop the policeman from exacting revenge.
Direct answers for episode-level questions and details.
Hawaii Five-0 Season 1 Episode 21 aired on April 18, 2011.
This episode runs for approximately 44 minutes.
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