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The ninth season of Hawaii Five-0 premiered on September 28, 2018 on CBS and concluded on May 17, 2019. The season consisted of 25 episodes.

Cast Edit

Main Edit

Recurring Edit

Guest Edit

Episodes Edit

Title Written by Directed by Original air date Production code
Cocoon Peter M. Lenkov Bryan Spicer September 28, 2018 901
Cocoon
After Steve's CIA agent friend is killed, McGarrett lets himself be captured by the group he thinks is responsible and endures a torturous sensory deprivation tank to find the killer. Also, Tani wrestles with whether or not she will tell McGarrett about the murder weapon she found at Adam's house.
The Man Who Fell from the Sky David Wolkove & Matt Wheeler Eagle Egilsson October 5, 2018 902
The Man Who Fell From the Sky
When a vacationing dad on a flight to Honolulu is kidnapped and force to parachute mid-flight, Danny, Tani and Junior track him through the jungle to discover that he may not be who he seems. Also, McGarrett is threatened with a secret from his past.
When the Sea Draws Out the Tidal Wave, the Rocks Where the Cowries Hide Are Exposed Rob Hanning Antonio Negret October 12, 2018 903
S9E3
Crime spikes when a heat wave hits Oahu, causing McGarrett and Danny to hunt down a bank thief, and Tani and Junior's car is stolen while they're on duty. Also, Grover plays the golf game of a lifetime, and Kamekona incites a riot by price-gouging on his shave ice.
On the Slope of the Cliff, Not One Jutting Rock is Hidden from Sight Talia Gonzalez & Bisanne Masoud Ron Underwood October 19, 2018 904
S9E4
Jerry accompanies Junior as he escorts a fallen soldier home to Oahu. Also, McGarrett and Danny discover a dead body when they delve into the illegal and highly profitable black market for sand.
Nothing More the Eyes to Search For Zoe Robyn & Sean O'Reilly Liz Allen Rosenbaum October 26, 2018 905
Nothing More the Eyes to Search For
On Halloween, Jerry and his friends search his childhood camp for evidence to a murder he witnessed as a boy, while McGarrett investigates a little girl who drew pictures depicting the scene of a recent murder before it was discovered.
Is Borne on the Back; Is Borne in the Arms Rob Hanning & Paul Grellong Peter Weller November 2, 2018 906
Is Borne on the Back; Is Borne in the Arms
McGarrett crosses the line and is arrested while investigating the death of his former SEAL buddy, who died while making an emergency landing on an aircraft carrier, and the only survivor is a baby. Also, Adam returns to Oahu with some devastating news about his marriage.
The Smoke Seen in the Dream Now Rises Peter M. Lenkov (Story)
David Wolkove & Matt Wheeler (Teleplay)
Brian Spicer November 9, 2018 907
The Smoke Seen in the Dream Now Rises
McGarrett investigates a cold case from the 1940s, one that his grandfather and the famous Honolulu detective Chang Apana worked on, and he tries to deduce how the case could have been solved. Also, McGarrett and Danny get ready for the opening of their restaurant.
Birds of a Feather... Chi McBride Carlos Bernard November 16, 2018 908
Birds of a Feather
Thanksgiving brings Grover's parents and brother Percy Jr. to Oahu for a visit tainted by sibling rivalry, and Five-0 investigates a thief who is crushed to death by an empty safe.
Truth Comes from the Night Christos Gage & Ruth Fletcher Gage Brad Tanenbaum November 30, 2018 909
Truth Comes from the Night
A renowned urban vigilante is killed after making another citizen's arrest, and Five-0 delves into the world of super heroes and comic books to find the killer. Also, Adam finally gets closer to finding out who killed his sister.
When the Light Goes Out, the House Is Dark Paul Grellong Gabriel Beristain December 7, 2018 910
When the Light Goes Out, the House Is Dark
After fighting off an assassin in his own home, McGarrett and Joe White flee to Montana to prepare for a battle against those exacting revenge for a past SEAL mission.
Gone on the Road from which There Is No Returning Matt Wheeler & David Wolkove Carl Weathers January 4, 2019 911
Gone on the Road from which There Is No Returning
Still reeling from the murder of one of their ohana, Steve and Catherine along with Danny, Junior and some old friends, Harry Langford and Wade Gutches hunt down the killer. Also, Tani and Grover investigate when a bag of human bones, discovered inside an abandoned storage locker goes missing.
A Bruise Inflicted on an Innocent Person Vanishes Quickly Zoe Robyn Roderick Davis January 11, 2019 912
A Bruise Inflicted on an Innocent Person Vanishes Quickly
MacGarrett and Five-0 support Danny and Rachel by determining what happened when Grace gets into a life-threatening car accident and lands in critical condition. Also, Tani helps Koa when his rehab patient goes missing.
Those Above are Descending Johnny Richardson (Story), Rob Hanning & Sean O'Reilly (Teleplay) Karen Gaviola January 18, 2019 913
Those Above are Descending
Adam, Junior and Tani travel to the bottom of the Pacific Ocean when a murder takes place in a remote underwater lab, and the killer may still be on board.
Depressed with the Heat of Kealwalua Paul Grellong Peter Weller February 1, 2019 914
Depressed with the Heat of Kealwalua
While investigating Flippa's friend's murder, McGarrett and Grover uncover a deadly plan by an extremist group on the Island. Also, Grover has an emotional reaction to the case.
Made Prisoner by the Reign of the Rain Rob Hanning Karen Gaviola February 15, 2019 915
Made Prisoner by the Reign of the Rain
As a dangerous hurricane hits Oahu, Five-0 is tasked with protecting El Diablo is captured serial killer who is being hunted by an assassin. Also, Tani's civilian safety check during the storm turns deadly and Rachel and Charlie evacuate to Danny's house, where the ex-spouses reminisce.
When Covetousness is Conceived, Sin is Born Talia Gonzalez & Bisanne Masoud Jerry Levine February 22, 2019 916
When Covetousness is Conceived, Sin is Born
When the top salesperson for a beauty company/pyramid scheme is murdered, Five-0 sifts through a long list of possible suspects who would want her dead. Also, Adam befriends a homeless man estranged from his family.
Offer Young Yaro Leaves to David Wolkove & Matt Wheeler Alex O'Loughlin February 22, 2019 917
Offer Young Taro Leaves to
Junior is torn between his duties as a member of Five-0 and his feelings for his former girlfriend when her new love, the father of her son, is one of the culprits in a bank-heist-turned-homicide.
He Who Eats 'Ape is Bound to Have His Mouth Itch Matt Wheeler & David Wolkove Eagle Egilsson March 8, 2019 918
He Who Eats &#039;Ape is Bound to Have His Mouth Itch
Tani and Junior go undercover at a gym to track down a deadly batch of steroids that’s killing users, before the drugs claim any more victims. Also, Danny and MacGarrett sub as bodyguards for Danny’s high maintenance ex-mother-in-law, Amanda Savage is a wildly famous romance novelist with whom he has never gotten along
The Octopus of the Deep Spews It's Ink Christos Gage & Ruth Fletcher Gage Maja Vrvilo March 15, 2019 919
The Octopus of the Deep Spews It&#039;s Ink
Five-0 investigate the murder of a window washer and find that the victim is actually a renowned street artist who may have a politically motivated bounty on his head. Also, Grover and Adam look into the murder of a gambler, and Junior helps his father when they are reminded of his sister's death.
Way of the Gun Paul Grellong David Straiton April 5, 2019 920
Way of the Gun
Five-0 must locate a teen girl who purchased a gun from a junkie, and discover that the firearm, over the course of decades, has affected all of their lives.
Offspring of an Owl David Wolkove & Matt Wheeler Jerry Levine April 12, 2019 921
Offspring of an Owl
Five-0 investigates the murder of a man whose body may hold the key to a 20-year-old case involving a kidnapped girl whose father never stopped looking for her.
The Teacher, the Pupil - Let it Come Forth Rob Hanning & Ashley Dizon Brad Turner April 26, 2019 922
The Teacher, the Pupil - Let it Come Forth
While Adam investigates the murder of an undercover FBI agent about to wed the daughter of a Yakuza leader, Noelani is held hostage and forced, along with her mentor Dr. Chu to operate at gunpoint on a criminal.
A Stranger Only for a Day Zoe Robyn Gabriel Beristain May 3, 2019 923
A Stranger Only for a Day
While McGarrett helps his visiting sister, Mary spy on her shady neighbors, Five-0 investigates the murders of a ride-share driver and his passenger. Also, the team teases the youngest members of Five-0 when Junior escorts Tani to a wedding.
The Hand is at Fault Paul Grellong & Sean O'Reilly Peter Weller May 10, 2019 924
The Hand is at Fault
Fugitive hacker Aaron Wright resurfaces to ask Five-0 for help when his co-workers at the NSA, which he has been working for, are all murdered. Also, Junior speaks at the parole hearing of the drunk driver who killed his sister.
Endlessly Pours the Rain of Waianae Matt Wheeler & David Wolkove Eagle Egilsson May 17, 2019 925
Endlessly Pours the Rain of Waianae
Five-0 continues to hunt down escaped criminal Aaron Wright before he can sell cyber-weapons to the highest bidder. Also, the lives of McGarrett and the team are put in danger when a visitor comes to headquarters to make amends.

Trivia Edit

  • On April 18, 2018, CBS renewed the series for a ninth season of H50 along with 10 other series, including the reboot series MacGyver and freshman series S.W.A.T..
  • On May 17, 2018 it was confirmed that Hawaii Five-0 would air in the fall and keep its Friday at 9/8c slot.
  • Ian Anthony Dale is set to return to the series in episode six due to conflicting filming of other CBS television series Salvation in which he is also a series regular.
  • It was later announced that Louis Gossett Jr. and Gladys Knight are set to guest star in an episode as the father and mother respectively of McBride's character, Lou Grover.
  • On November 20, 2018 it was announced that Terry O'Quinn would return in the season's mid-season finale, while on December 4, 2018 it was reported that former main cast member Michelle Borth would return for the mid-season premiere.
  • It was revealed on January 18, 2019 that Joan Collins would be guest starring in an episode as Amanda Savage.
  • On March 6, 2019, it was reported that former main cast member Taryn Manning, who last appeared as a guest star in the sixth season, would be returning as Mary McGarrett.
  • Andy Lawrence's brother Joey who appeared as a guest star in the eighth season is expected to return as a guest star in the two-part season final since his other brother Matthew appeared in episode sixteen.
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