Original air date: 09/28/2018 Runtime: 43:46 min. 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.
Original air date: 10/05/2018 Runtime: 41:44 min. 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.
Original air date: 10/12/2018 Runtime: 42:16 min. 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.
Original air date: 10/26/2018 Runtime: 43:06 min. 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.
Original air date: 11/02/2018 Runtime: 43:46 min. 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.
Original air date: 11/09/2018 Runtime: 43:35 min. 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, on the milestone 200th episode of HAWAII FIVE-0.
Original air date: 11/16/2018 Runtime: 43:46 min. Thanksgiving brings Grover’s parents (guest stars Louis Gossett Jr. and Gladys Knight) and brother Percy, Jr. (Clifton Powel) to Oahu for a visit tainted by sibling rivalry, and Five-0 investigates a thief who is crushed to death by an empty safe.
Original air date: 01/04/2019 Runtime: 43:46 min. 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.
Original air date: 01/11/2019 Runtime: 43:19 min. MacGarrett and Five-0 support Danny and Rachel (Claire van der Boom) by determining what happened when Grace (Teilor Grubbs) gets into a life-threatening car accident and lands in critical condition. Also, Tani helps Koa (Kunal Sharma) when his rehab patient goes missing.
Original air date: 02/15/2019 Runtime: 43:46 min. As a dangerous hurricane hits Oahu, Five-0 is tasked with protecting El Diablo (Raoul Trujillo), 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.
Original air date: 03/08/2019 Runtime: 41:51 min. 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 (Joan Collins), a wildly famous romance novelist with whom he has never gotten along.
Original air date: 03/15/2019 Runtime: 43:33 min. 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.
Original air date: 05/03/2019 Runtime: 42:22 min. While McGarrett helps his visiting sister, Mary (Taryn Manning), 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.
Original air date: 05/10/2019 Runtime: 43:41 min. Fugitive hacker Aaron Wright (Joey Lawrence) 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.
Original air date: 05/17/2019 Runtime: 42:37 min. Five-0 continues to hunt down escaped criminal Aaron Wright (Joey Lawrence) 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.