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In this episode, McGarrett works with a young autistic man named Neil, who witnessed a murder and might have information about a daring bank heist. The investigation eventually leads the team to a showdown with recurring villain . Simultaneously, Danny's mother is questioned by the FBI regarding his brother’s death. How to watch and stream Hawaii Five-0 - 2010-2020 on Roku

Streaming on Roku. Hawaii Five-0, a crime series starring Alex O'Loughlin, Scott Caan, and Chi McBride is available to stream now. Hawaii Five-0: Season 6, Episode 15 | Rotten Tomatoes