Watch Hawaii Five-0 Online: Season 8 Episode 12

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Who killed an FBI agent who was trying his best to crack down on organized crime?

That was the big question on Hawaii Five-0 Season 8 Episode 12 and one that McGarrett wanted to get to the bottom of. 

He took the murder to heart and rounded up every single gang-related criminal on the island in an attempt to find the person responsible, but who was it?

Meanwhile, Adam was given the green light to form a new division within Five-0 to take on organized crime. 

Use the video above to watch Hawaii Five-0 online right here via TV Fanatic.

Get caught up on all the action right now. 

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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Hawaii Five-0 Season 8 Episode 12 Quotes

Junior: Why do I need backup?
McGarrett: No, no, you misunderstand. You are the backup. Baby steps.

You approach a member of my team again without my knowledge, and our conversation isn't going to be nearly as pleasant.

McGarrett [to FBI Agent Fischer]