Hawaii Five-O Wiki
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<-----Season 7

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.

Cast[]

Main Cast[]

Recurring characters[]

Guest Stars[]

Spoilers[]

Episodes[]

Title Written by Directed by Original air date Production code
Fire Will Never Say that It Has Had Enough Peter M. Lenkov,
 Eric Guggenheim
 and Rob Hanning
Bryan Spicer September 29, 2017 801
Fire Will Never Say that It Has Had Enough - Promotional Images 10
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
Dog Days - Promotional Images 3
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
Your Knife, My Back. My Gun, Your Head - Promotional Images 1
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
No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise - Promotional Images 1
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 Kama’oma’o, The Land of Activities - Promotional Images 1
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
Unfolded by the Water are the Faces of the Flowers - Promotional Images 1
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
The Royal Eyes Rest Above - Promotional Images 9
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
The Trail Leads To A Diving Place; Do Not Follow After - Promotional Images 5
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
Death at Sea
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
The Future is in the Past
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
A Tall Tree Stands Above the Others
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
The Round Up
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
What is Gone is Gone
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
The Children of Kalaihaohia
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
A Coral Reef Strengthens Out into Land
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
Only the Stars of Heaven Know Where Pae Is
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
The Fire Blazed Up, Then Only Ashes Were Left
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
To Do One's Duty
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
No One Has Ever Died For the Mistakes He Has Made; Only Because He Didn't Repent
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
Kind Is the Bird of Kaiona
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
The Answer to the Riddle is Seen
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
Though the Fish is Well Salted, the Maggots Craw
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
What Parents Do, Children Will Do
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
The Tough Branch That Does Not Break in the Kona Gale
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
Ancients Exposed
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.

Trivia[]

Notes[]

  • On March 23, 2017, CBS renewed the series for a eighth season.

Casting[]

  Seasons of Hawaii Five-0
Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10
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