Season 9 ----->
The eighth season of Hawaii Five-0 premiered on September 29, 2017 on CBS and concluded on May 18, 2018. The season consisted of 25 episodes.
- Alex O'Loughlin as Commander Steve McGarrett
- Scott Caan as Detective Danny Williams
- Ian Anthony Dale as Adam Noshimuri
- Meaghan Rath as Tani Rey
- Jorge Garcia as Jerry Ortega
- Beulah Koale as Junior Reigns
- Chi McBride as Lou Grover
- Dennis Chun as Sergeant Duke Lukela
- Taylor Wily as Kamekona Tupuola
- Kimee Balmilero as Dr. Noelani Cunha
- Paige Hurd as Samantha Grover
- Andrew Lawrence as Eric Russo
- Claire Forlani as Alicia Brown
- Michelle Krusiec as Michelle Shioma
- Christine Ko as Jessie Nomura
- Chosen Jacobs as William Grover
- Zach Sulzbach as Charles Williams
- Kunal Sharma as Koa Rey
- Michael Imperioli as Odell Martin
- Shawn Mokuahi Garnett as Flippa Tupuola
- Shawn Anthony Thomsen as Pua Kai
- Vincent Pastore as Vito Russo
- Kekoa Kekumano as Nahele Huikala
- Susan Park as Noriko Noshimuri
- Lili Simmons as Melissa Armstrong
- Claire van der Boom as Rachel Edwards
- Joey Lawrence as Aaron Wright
- Randy Couture as Jason Duclair
- Jimmy Buffett as Frank Bama
- Michelle Borth as Catherine Rollins
- Erika Brown as adult Grace Williams
- Joey Defore as adult Charlie Williams (20 years-old)
- Bob McCracken as DEA Agent Chris Reid
- Casper Van Dien as Roger Niles
- Steven Brand as John Walcott
- Derek Mio as Derek Okada
- Robyn Lively as Helen Meech
- Will Yun Lee as Sang Min
- Chris Vance as Harry Langford
- Terry O'Quinn as Joe White
- Leonardo Nam as Harley Taylor
- Reggie Lee as Joey Kang
- Devon Sawa as Brad Woodward
|Title||Written by||Directed by||Original air date||Production code|
|Fire Will Never Say that It Has Had Enough||Peter M. Lenkov,
and Rob Hanning
|Bryan Spicer||September 29, 2017||801|
McGarrett and Danny recruit Tani Rey to join the task force when diabolical hacker Aaron Wright releases a dangerous arsonist from prison.
|Dog Days||David Wolkove & Matt Wheeler||Tara Miele||October 6, 2017||802|
McGarrett and Five-0 work with an injured police dog who is the only witness to an ambushed drug bust. Also, McGarrett is visited by Junior Reigns, a former SEAL, who is looking to join the task force.
|Your Knife, My Back. My Gun, Your Head||David Wolkove & Matt Wheeler||Eagle Egilsson||October 13, 2017||803|
Five-0 enlists the help of an old friend when the boss of a major crime family is murdered, triggering revenge killings across the island. Also, MacGarrett and Danny begin sorting out particulars in their new restaurant venture
|No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise||Rob Hanning||Antonio Negret||October 20, 2017||804|
The lives of Five-0’s informants are in danger when the HPD system is hacked and one ends up dead, forcing McGarrett to enlist the help of hacker Aaron Wright, who he just imprisoned
|At Kama'oma'o, The Land of Activities||Peter M. Lenkov & Eric Guggenheim||Bronwen Hughes||November 3, 2017||805|
At Halloween, Five-0 must investigate a string of murders that mirror stories from well-known Hawaiian folklore. Also, Grover is called to visit a man hours away from execution who may hold the key to a case that has plagued Grover for years
|Unfolded by the Water are the Faces of the Flowers||Eric Guggenheim & Zoe Robyn||Carlos Bernard||November 10, 2017||806|
The murder of two tourists leads Five-0 to a man suffering from multiple personality disorder, where one of them becomes violent and another is a child. McGarrett is accompanied on the case by a stress management consultant, whom Danny and the others have hired to help him manage his health.
|The Royal Eyes Rest Above||Peter M. Lenkov & Eric Guggenheim||Bryan Spicer||November 17, 2017||807|
Junior and Adam back up McGarrett when a bank heist in progress forces Steve to make a potentially heartbreaking mistake. Also, Adam is forced to face an empty home without Kono.
|The Trail Leads To A Diving Place; Do Not Follow After||Liz Alper & Ally Seibert||Rob Underwood||December 1, 2017||808|
McGarrett poses as a pilot to investigate the cause of a plane crash that led to the death of a pilot in an air race.
|Death at Sea||David Wolkove & Matt Wheeler||Maja Vrvilo||December 8, 2017||809|
When investigating a deserted yacht adrift at sea, McGarrett, Danny, Tani and Junior are exposed to a deadly bioweapon and the rest of Five-0 have only eight hours to find an antidote.
|The Future is in the Past||Zoe Robyn||Peter Weller||December 15, 2017||810|
When Danny is shot while quarantined in the hospital with McGarrett, Tani and Junior, he’s left unconscious and clinging to life, imagining a future for everyone in Five-0.
|A Tall Tree Stands Above the Others||Rob Hanning||Tara Miele||December 15, 2017||811|
It’s Christmas Eve and Danny tells Charlie a bedtime story about a recent Five-0 case involving criminals dressed as Santas and a holiday miracle.
|The Round Up||David Wolkove & Matt Wheeler||Eagle Egilsson||January 5, 2018||812|
When an FBI agent who was cracking down on organized crime is killed, McGarrett rounds up every gang-related criminal on the island to find the culprit. Also, McGarrett tasks Adam with forming a new division within Five-0 to take on organized crime.
|What is Gone is Gone||Sean O'Reilly||Roderick Davis||January 12, 2018||813|
When a man accused of killing his wife threatens to commit suicide, Grover reveals how he too was once on the brink of taking his own life.
|The Children of Kalaihaohia||Peter M. Lenkov & Eric Guggenheim||Peter Weller||January 19, 2018||814|
When the corpse of a diamond smuggler is stolen from a graveyard, Five-0 tracks down his partner, Voss, who will stop at nothing to retrieve their latest batch of contraband. Also, Adam recruits a new confidential informant, Jessie Nomura; Tani gets a devastating call; and McGarrett tasks Pua to find his and Danny’s stolen tools.
|A Coral Reef Strengthens out into Land||David Wolkove and Matt Wheeler||Bryan Spicer||February 2, 2018||815|
McGarrett and Danny investigate the murder of a private detective whose client was killed the same way, and Adam sends Jessie into a dangerous situation with disastrous consequences. Also, Danny’s uncle, Vito, comes to town to help Danny and McGarrett get their restaurant up and running.
|Only the Stars of Heaven Know Where Pae Is||David Wolkove and Matt Wheeler||Jerry Levine||March 2, 2018||816|
Tani and Junior go undercover as prospective parents in order to infiltrate a private school where the headmaster was murdered. Also, Adam’s life is on the line when he is held captive and forced to produce a hidden massive amount of money.
|The Fire Blazed Up, Then Only Ashes Were Left||Liz Alper & Ally Seibert||Maja Vrvilo||March 9, 2018||817|
Adam's mission to take down organized crime on the Island goes sideways when deadly chlorine gas he was using to bait a big fish falls into the wrong hands. Also, Adam begins to doubt Jessie’s allegiance.
|To Do One's Duty||David Wolkove & Matt Wheeler||Alex O'Loughlin||March 30, 2018||818|
The ex-wife of the man who shot Danny comes to Oahu and reveals how Danny's protection during a dangerous domestic dispute when he was in New Jersey helped save her life. Also, Tani and Junior are assigned to walk the beat as uniformed officers for the day, and Adam is framed for the murder of the crime boss he has been tracking.
|No One Has Ever Died For the Mistakes He Has Made; Only Because He Didn't Repent||Rob Hanning & Ashley Dizon||Jennifer Lynch||April 6, 2018||819|
A hitman, Leroy Davis, McGarrett's father failed to arrest comes to McGarrett to finally confess his crimes and admit where he buried his victims. Also, Jessie makes a dangerous decision that could ruin Adam’s life.
|Kind Is the Bird of Kaiona||Rob Hanning & Sean O’Reilly||Bryan Spicer||April 13, 2018||820|
Catherine Rollins recruits her ex-boyfriend McGarrett and Jerry to help her track down a uranium deposit thought to be hidden on an abandoned Hawaiian island before a suspected terrorist can make dirty bombs with it. Also, when Junior falls and is trapped in a ravine, he reflects on his estranged relationship with his father.
|The Answer to the Riddle is Seen||David Wolkove & Matt Wheeler||Eagle Egilsson||April 20, 2018||821|
Harry Langford enlists McGarrett and Danny’s help to track down Lady Sophie, a teenage British royal who has run away while under his protection. Also, Grover, Tani and Junior work a 25-year-old murder case after a mysterious Betamax tape arrives at 5-0 headquarters.
|Though the Fish is Well Salted, the Maggots Crawl||Rob Hanning & Rachael Paradis||Ruba Nadda||April 27, 2018||822|
Five-0 must help Duke after he is forced to steal crucial evidence from the police locker in exchange for his kidnapped granddaughter. Also, Jerry goes undercover at a mental health facility in order to solve a murder.
|What Parents Will Do, Children Will Do||Peter M. Lenkov & Matt Wheeler||Jim Jost||May 4, 2018||823|
McGarrett and Five-0 take on the mob when a former boss is killed and Junior’s friend Cammy Lin is on the run after witnessing the hit.
|The Tough Branch That Does Not Break in the Kona Gale||Alex O'Loughlin (Story), Zoe Robyn (Teleplay)||Krishna Rao||May 11, 2018||824|
McGarrett joins Junior and his SEAL Team on a high risk covert mission to capture an elusive target who is holding his mentor, Joe White hostage. Also, Gerard Hirsch and Kamekona help Grover and Tani on a murder case involving masterpieces stolen by the Nazis during WWII and Tani makes a shocking discovery.
|Ancients Exposed||Peter M. Lenkov & Eric Guggenheim||Bryan Spicer||May 18, 2018||825|
McGarrett and Five-0 discover a Russian spy ring hiding in plain sight when a Russian nuclear attack submarine appears off the coast of Waikiki. Also, Tani is conflicted by her unnerving discovery at Adam’s house.
- On March 23, 2017, CBS renewed the series for a eighth season.
- Daniel Dae Kim (Chin Ho Kelly), Grace Park (Kono Kalakaua) and Masi Oka (Max Bergman) are not returning as their main characters in season 8.
- Ian Anthony Dale has recurred on H50 as Adam Noshimuri since season two, becoming a trusted confidant and resource for the team who will now be recruited by McGarrett to work for Five-0. This summer, Dale is starring in the suspense thriller Salvation, on the Network.
- Meaghan Rath will play Tani Rey, who McGarrett recruits after finding her working as a lifeguard at a hotel pool after she was kicked out of the Police Academy, despite being a first-rate candidate.
- Beulah Koale will portray Junior Reigns, a former Navy SEAL who just returned from serving his country and asks McGarrett, a fellow SEAL, for a job, hoping to re-purpose his skills as a member of Five-0.
- Taylor Wily, Dennis Chun and Kimee Balmilero is upgraded from recurring to regular series.
- Michael Imperioli, Claire van der Boom, Jimmy Buffett and Michelle Borth would return from their guest appearance in this season.
|Seasons of Hawaii Five-0|
|Season 1 ♦ Season 2 ♦ Season 3 ♦ Season 4 ♦ Season 5 ♦ Season 6 ♦ Season 7 ♦ Season 8 ♦ Season 9 ♦ Season 10|