What's the best course of action when there's a huge oil spill?
You'll find out the answer to that on Hawaii Five-0 Season 6 Episode 21 as the team joined forces to go on a huge manhunt to find those responsible.
Elsewhere, six inmates escaped due to the spill, but just how much much of a threat did they pose to the public?
Also, Kono was conflicted about what to do because one of the inmates was her husband.
Use the video above to watch Hawaii Five-0 online to get up to speed with the latest drama.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.