Watch Hawaii Five-0 Season 1 Episode 21 online via TV Fanatic with over 7 options to watch the Hawaii Five-0 S1E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, Netflix, YouTube Purchase, Google Play, and CBS All Access.
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When a crime lord moves against the family of an undercover NYPD detective who infiltrated his organization, it's up to McGarrett and Five-0 to stop the policeman (Diddy) from exacting revenge.