Oia'i'o

Chin is offered a job at the Honolulu Police Department. Steve receives another envelope with a missing piece from his fathers "Champ" toolbox, which contains a key. Following a meeting at the 'Iolani Palace, Laura starts her car which explodes, killing her.

The Five-0 Task Force investigates the explosion and finds remnants of a claymore mine. Jenna recognizes it as work of Wo Fat. Charlie Fong matches a writing sample on the envelopes to Laura's. Jenna finds out that a shipment of military supplies containing claymore's were stolen and that the main suspect was Dale O'Riley. Steve and Danny visit Dale, who claims that he sold the mine to Steve McGarrett.

Chin tells Steve, Danny, and Jenna that when HPD processed Laura's house Steve's fingerprints were found inside. Dale is offered a deal, and is offered leniency in exchange for testimony that he actually sold the mine to Wo Fat. Steve recognizes an antique in the Governor's office which he believes the key will fit. Steve is told that Dale had been murdered during transport to prison. Steve comes up with a plan to break into the Governor's mansion and when he does he finds more items from the toolbox along with photos of Laura delivering envelopes to him. Rachel tells Danny that she is pregnant with his child and wants to move back to the mainland.

Steve shares his findings with Danny and the two deduce that the Governor had Laura killed for helping Steve. Chin is informed that an arrest warrant has been issued for Steve for the murder of Laura. HPD arrives to arrest him but he escapes. Steve visits Kamekona acquiring weapons from him. Meanwhile, an internal affairs officer brings Kono in on suspicion of stealing money from the HPD asset forfeiture locker. Steve breaks into the Governor's mansion for a second time, holds her at gunpoint, and gets the Governor to confess to putting out the murder hit for his father, mother, and Laura. Wo Fat tasers Steve from behind, causing him to pass out. Wo Fat shoots and kills the Governor and places the gun in Steve's hand. Chin, who accepted the position his job back at HPD, arrests Steve.

A witness recognizes Kono as the one who stole from the forfeiture locker. Kono is forced to turn in her gun and badge pending investigation while Steve is being processed for jail.

{{rquote|left|It's sort of our all-star episode because everybody who started with us is coming back|Peter M. Lenkov{{cite web|url=https://www.tvguide.com/news/hawaii-five0-finale-lenkov-1033128/|title=Hawaii Five-0 Finale: Will McGarrett Go Too Far to Catch Wo Fat?|last=Bryant|first=Adam|date=May 15, 2011|access-date=November 22, 2018|work=TV Guide}}}}

A large number of supporting actors who had previously portrayed recurring and guest characters from the season reprised their roles including Mark Dacascos, Claire van der Boom, Teilor Grubbs, Taylor Wily, Larisa Oleynik, Jean Smart, Kelly Hu, Brian Yang, and Dennis Chun.{{cite press release|url=https://cbspressexpress.com/cbs-entertainment/shows/hawaii-five-0/releases/view?id=28084|title=MCGARRETT'S SHOWDOWN WITH ARCH NEMESIS WO FAT COULD MARK THE END OF FIVE-0, ON THE FIRST SEASON FINALE OF "HAWAII FIVE-0," MONDAY, MAY 16|date=April 21, 2011|access-date=November 21, 2018|work=CBS Press Express}} The episode marked the final appearances of actors Jean Smart and Kelly Hu who portrayed recurring characters Governor Pat Jameson and Laura Hills respectively who were both killed off.{{cite magazine|url=https://ew.com/article/2011/05/17/hawaii-five-0-season-finale/|title=Hawaii Five-0 season finale|date=May 17, 2011|access-date=November 21, 2018|last=Bierly|first=Mandi|magazine=Entertainment Weekly}}{{cite web|url=https://www.tvguide.com/news/kecks-exclusives-hawaii-1038169/|title=Keck's Exclusives: Another Hawaii Five-0 Death?|date=September 27, 2011|access-date=November 21, 2011|last=Keck|first=William|work=TV Guide}}

Filming for the episode began on April 8 and concluded on April 15 of 2011.{{cite web|url=http://www.staradvertiser.com/2011/05/15/features/behind-the-scenes-of-the-five-0-finale/|title=Behind the scenes of the 'Five-0' finale|date=May 15, 2011|access-date=November 21, 2018|last=Gordon|first=Mike|work=Honolulu Star-Advertiser}} Producers kept pieces of the script hidden until filming to keep certain aspects of the story confidential.{{cite interview|url=http://www.hawaiinewsnow.com/story/14656801/hawaii-five-o-season-one-ends-with-cliffhangers/|title=Hawaii Five-O season one ends with cliffhangers|quote="A bunch of the script, they (the producers) didn't release, as well, because it's sort of top secret stuff, and they're sending it out in pages as we're shooting it,"|last=O'Loughlin|first=Alex|date=May 16, 2011|access-date=November 22, 2018|interviewer=Teri Okita|work=Hawaii News Now}}

The press release for the episode occurred on April 21, 2011. The teaser trailer aired immediately following the previous episode on May 9.{{cite episode|url=https://www.cbs.com/shows/hawaii_five_0/video/2tHSdP7Qq9dl1EtNVlLvz3mC653pkx75/hawaii-ua-hiki-mai-kapalena-pau/|title=Ua Hiki Mai Kapalena Pau|season=1|number=23|date=May 9, 2011|network=CBS|series=Hawaii Five-0|series-link=Hawaii Five-0 (2010 TV series)}}

Lead actor Alex O'Loughlin stated "I think it is always really important to bring it home, but this one is a clincher [...]" while executive producer and showrunner, Peter M. Lenkov stated "The fact that you can survive, 24 episodes later, is pretty significant."

The episode aired on September 28, 2018 and was watched live and same day by 10.41 million viewers.{{cite web|url=http://tvbythenumbers.zap2it.com/2011/05/18/monday-final-ratings-dancing-hawaii-five-0-how-i-met-your-mother-mad-love-mike-the-chicago-code-adjusted-down/93127/|archive-url=https://web.archive.org/web/20110521181640/http://tvbythenumbers.zap2it.com/2011/05/18/monday-final-ratings-dancing-hawaii-five-0-how-i-met-your-mother-mad-love-mike-the-chicago-code-adjusted-down/93127/|url-status=dead|archive-date=May 21, 2011|title=Monday Final Ratings: 'Dancing,' 'Hawaii Five-0,' 'How I Met Your Mother,' 'Mad Love,' 'Mike & Molly' Adjusted Up; 'The Chicago Code' Adjusted Down|last=Seidman|first=Robert|work=TV by the Numbers|date=May 18, 2011|access-date=November 21, 2018}} It ranked as the fifteenth most viewed series for the week of May 16–22, 2011.{{cite web|url=http://tvbythenumbers.zap2it.com/2011/05/24/tv-ratings-broadcast-top-25-american-idol-modern-family-the-voice-dancing-with-the-stars-ncis-top-week-35-ratings/93714/|archive-url=https://web.archive.org/web/20110526185103/http://tvbythenumbers.zap2it.com/2011/05/24/tv-ratings-broadcast-top-25-american-idol-modern-family-the-voice-dancing-with-the-stars-ncis-top-week-35-ratings/93714/|url-status=dead|archive-date=May 26, 2011|title=TV Ratings Broadcast Top 25: 'American Idol,' 'Modern Family,' 'The Voice,' 'Dancing with the Stars,' 'NCIS' Top Week 35 Ratings |first=Bill |last=Gorman|date=May 24, 2011|access-date=November 21, 2018|work=TV by the Numbers}} Within seven days, by means of DVR and video on demand services the total number of viewers rose to 13.61 million.{{cite web |url=http://tvbythenumbers.zap2it.com/2011/06/06/live7-dvr-ratings-modern-family-season-finale-tops-absolute-and-gains-in-seasons-final-full-week/94772/ |archive-url=https://web.archive.org/web/20110609182411/http://tvbythenumbers.zap2it.com/2011/06/06/live7-dvr-ratings-modern-family-season-finale-tops-absolute-and-gains-in-seasons-final-full-week/94772/ |url-status=dead |archive-date=June 9, 2011 |title=Live+7 DVR Ratings: 'Modern Family' Tops Absolute And % Gains In Season's Final Full Week|first=Bill|last=Gorman|date=June 6, 2011|access-date=November 21, 2018|work=TV by the Numbers}}

Reviews toward the episode were mostly positive. TV Fanatic gave the episode an editorial rating of 4.7 out of 5 saying "Overall, there were a lot of thrilling and unexpected moments, but there were some things that were slightly predictable.".{{cite web|url=https://www.tvfanatic.com/shows/hawaii-five-0/episodes/season-1/oiaio/|title=Oia'i'o|access-date=November 22, 2018|work=TV Fanatic|date=11 May 2011 }}{{cite web|url=https://www.tvfanatic.com/2011/05/hawaii-five-o-review-oiaio/|title=Hawaii Five-O Season Finale Review: Who Died?|date=May 17, 2011|access-date=November 30, 2020|work=TV Fanatic}}

The episode was released on DVD and Blu-ray along with the other season 1 episodes in a 6-disc box set including deleted scenes and other special features. It was released in region one on September 20, 2011 and in region two on September 26.{{cite web|url=http://www.tvshowsondvd.com/news/Hawaii-Five-0-Season-1/15610|title=Hawaii Five-0 - 'Season 1' DVD Announced for the New 2010 Show: Date, Cost, Box, Extras|first=David|last=Lambert|date=July 6, 2011|access-date=January 11, 2012|publisher=TVShowsonDVD|url-status=dead|archive-url=https://web.archive.org/web/20110709122407/http://www.tvshowsondvd.com/news/Hawaii-Five-0-Season-1/15610|archive-date=July 9, 2011}}{{cite web|url=https://www.amazon.co.uk/Hawaii-Five-Season-1-DVD/dp/B004JU0G1K/ref=sr_1_16?ie=UTF8&qid=1542865461&sr=8-16&keywords=Hawaii+Five-0|title=Hawaii Five-O - Season 1 [DVD]|date=September 26, 2011|access-date=November 21, 2018|work=amazon.co.uk}} It can also be viewed on demand with a CBS All Access subscription as well as Netflix.{{cite web|url=https://www.cbs.com/shows/hawaii_five_0/video/21jDOX9yLpbayEWP_Ah_7No0l5iDD1Z4/hawaii-oia-i-o/|title=Oia'i'o|date=May 17, 2011|access-date=November 21, 2018|work=CBS}}{{cite web|url=https://www.netflix.com/watch/70274429?trackId=13752289&tctx=0%2C23%2C7e310dae-6c59-410f-9274-f879f107c89e-29616132%2C%2C|title=Hawaii Five-0 S1:E24 Oia'i'o (Trust)|access-date=November 21, 2018|work=Netflix}} The episode can be individually purchased, or with the season as a whole, on Amazon, iTunes and Vudu.{{cite web|url=https://www.amazon.com/Loa-Aloha/dp/B005MJAZR2/ref=pd_vodsm_B005MJAZR2|title=Hawaii Five-0|access-date=November 21, 2018|work=Amazon}}{{cite web|url=https://itunes.apple.com/us/tv-season/hawaii-five-0-season-1/id390441091|title=Hawaii Five-0, season 1|access-date=November 21, 2018|work=iTunes|date=19 September 2010 }}{{cite web|url=https://www.vudu.com/content/movies/details/Hawaii-Five-0-Season-1/237976|title=Hawaii Five-0: Season 1|access-date=November 21, 2018|work=VUDU}}

• List of Hawaii Five-0 (2010 TV series) episodes
• Hawaii Five-0 (2010 TV series) season 1

{{reflist}}

• {{Official website|http://www.cbs.com/shows/hawaii_five_0/|Hawaii Five-0 official website on CBS}}
• {{Official website|http://www.tntdrama.com/shows/hawaii-five-0.html|Hawaii Five-0 official website on TNT}}
• {{IMDb episode|1913557}}

{{Hawaii Five-O}}

Category:Hawaii Five-0 (2010 TV series) episodes

Category:2011 American television episodes