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Season 9
Hawaii Five-0
25 EPISODES • 2018
McGarrett, Danno and the Five-0 task force continue to wipe out the crime that washes up on the islands' sun-drenched beaches, and this year are joined by new and old friends to help in their mission.
Season 8

Episodes

1: Ka 'owili 'oka'i (Cocoon)
Sep 28, 2018
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.
2: Ke Kanaka I Ha'ule Mai Ka Lewa Mai (The Man Who Fell From the Sky)
Oct 5, 2018
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.
3: Mimiki ke kai, ahuwale ka papa leho (When the Sea Draws Out the Tidal Wave, the Rocks Where the Cowries Hide Are Exposed)
Oct 12, 2018
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.
4: A'ohe kio pohaku nalo i ke alo pali (On the Slope of the Cliff, Not One Jutting Rock Is Hidden from Sight)
Oct 19, 2018
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.
5: A'ohe mea 'imi a ka maka (Nothing More the Eyes to Search for)
Oct 26, 2018
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.
6: Aia i Hi‘ikua, i Hi‘ialo (Is Borne on the Back, Is Borne in the Arms)
Nov 2, 2018
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.
7: Pua a'e la ka uwahi o ka moe (The Smoke Seen in the Dream Now Rises)
Nov 9, 2018
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.
8: Lele pu na manu like (Birds of a Feather)
Nov 16, 2018
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.
9: Mai ka po mai ka 'oia'i'o (Truth Comes from the Night)
Nov 30, 2018
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.
10: Pio ke kukui, po'ele ka hale (When the Light Goes Out, the House Is Dark)
Dec 7, 2018
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.
11: Hala I Ke Ala O’i’ole Mai (Gone on The Road From Which There is no Returning)
Jan 4, 2019
Steve and Catherine are still reeling from the murder of one of their ohana and, 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.
12: Ka hauli o ka mea hewa 'ole, he nalowale koke (A Bruise Inflicted on an Innocent Person Vanishes Quickly)
Jan 11, 2019
MacGarrett and Five-0 support Danny and Rachel by determining what happened when gets into a life-threatening car accident and lands in critical condition. Also, Tani helps Koa when his rehab patient goes missing.
13: Ke Iho Mai Nei Ko Luna (Those Above Are Descending)
Jan 18, 2019
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
14: Ikiiki i ka la o Keawalua (Depressed With The Heat of Kealwalua)
Feb 1, 2019
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.
15: Ho'opio 'ia e ka noho ali'i a ka ua (Made Prisoner by the Reign of the Rain)
Feb 15, 2019
As a dangerous hurricane hits Oahu, Five-0 is tasked with protecting El Diablo, a 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.
16: Hapai ke kuko, hanau ka hewa (When Covetousness is Conceived, Sin is Born)
Feb 22, 2019
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.
17: E'ao lu'au a kualima (Offer Young Taro Leaves To)
Feb 22, 2019
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.
18: Ai no i ka 'ape he mane'o no ko ka nuku (He Who Eats 'ape is Bound to Have His Mouth Itch)
Mar 8, 2019
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, a wildly famous romance novelist with whom he has never gotten along.
19: Pupuhi ka he'e o kai uli (The Octopus of the Deep Spews its Ink)
Mar 15, 2019
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.
20: Ke ala o ka pu (Way of the Gun)
Apr 5, 2019
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.
21: He kama na ka pueo (Offspring of an Owl)
Apr 12, 2019
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.
22: O ke kumu, o ka mana, ho'opuka 'ia (The Teacher, The Pupil - Let it Come Forth)
Apr 26, 2019
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.
23: Ho'okahi no la o ka malihini (A Stranger Only for a Day)
May 3, 2019
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.
24: Hewa ka lima (The Hand Is at Fault)
May 10, 2019
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.
25: Hana Mao 'ole ka ua o Waianae (Endlessly Pours the Rain of Waianae)
May 17, 2019
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.
Season 10
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