Watch Hawaii Five-0 Season 4 Episode 1 Online
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- COUNTRIES: United States of America,Singapore
- Subtitles: English,Español,Português
After McGarrett and Wo Fat narrowly escape from maximum security, gunmen storm Five-0 headquarters, compromising Kono and Adam's secret location in Hong Kong and forcing McGarrett to break the law and turn on his own in order to find a kidnapped Catherine.