Season 10

01 Ua ʻeha ka ʻili i ka maka o ka ihe (The Skin Has Been Hurt By the Point of the Spear) Episode 127th September 2019 A new ally helps McGarrett and Five-0 when mob bosses on the island are being targeted by an assassin. Also, Five-0 says goodbye to one of their own. 02 Kuipeia e ka makani apaa (Knocked Flat By the Wind; Sudden Disaster) Episode 24th October 2019 Tani and Junior must plot an escape for themselves and several civilians after they become trapped inside a deadly tunnel collapse, while Five-0 investigates the cause and culprits of the cave-in. Eddie the dog uses his field experience and sniffs out a bomb that has been planted in McGarrett’s home. 03 E uhi ana ka wa i hala i na mea i hala (Passing Time Obscures the Past) Episode 311th October 2019 Five-0 investigates when a plane that mysteriously crashed into the Pacific in the ‘80s is found, but with a recently murdered scuba diver inside. Also, as MacGarrett and Quinn zero in on who planted the bomb in his garage, and he formally asks her to join Five-0, she is arrested for money laundering. 04 Ukuli‘i ka pua, onaona i ka mau‘u (Tiny is the Flower, Yet It Scents the Grasses Around It) Episode 418th October 2019 Five-0 enlists imprisoned hacker Aaron Wright to help when a young girl is reported kidnapped, but upon rescue, the culprits are dead, the girl is safe, and she's not who she claims to be. 05 He ʻoiʻo kuhihewa; he kaka ola i ʻike ʻia e ka makaula (Don’t Blame Ghosts and Spirits for One's Troubles; A Human Is Responsible) Episode 525th October 2019 It's Halloween and Five-0 investigates a home invasion turned deadly after a dangerous "monster" escapes from the basement. Also, Max returns to Oahu with a very special guest. 06 A ʻohe pau ka ʻike I ka halau hoʻokahi (All Knowledge Is Not Learned in Just One School) Episode 61st November 2019 McGarrett and the team investigate when a deadly hit-and-run involves a driverless car carrying heroin, and what could be a new means for delivering drugs. Also, Tani and Quinn are stuck with a pair of YouTubers who are brought on a ride-along with Five-0. 07 Ka ʻiʻo (DNA) Episode 78th November 2019 When the CIA informs McGarrett that his mother has gone rogue on her undercover mission and may have killed her partner, Steve goes solo to Mexico to bring her home and prove her innocence. 08 Neʻe aku, neʻe mai ke one o Punahoa (That Way and This Way Shifts the Sand of Punahoa) Episode 815th November 2019 Five-0 teams up with a DEA agent to search for a killer whose plane crashed in the jungle with $10 million worth of heroin on board. Also, Grover is thrilled when his niece Siobhan comes to try out for the University of Hawaii basketball team. 09 Ka laäʻau kumu ʻole o Kahilikolo (The Trunkless Tree of Kahilikolo) Episode 922nd November 2019 It's Thanksgiving, and while Junior and Tani track down the thief who robbed his parents' home, Five-0 investigates the murder of a beloved philanthropist and the theft of his ultra-valuable koa tree. Also, Danny moves in with McGarrett. 10 O ʻoe, a ʻowau, nalo ia mea (You and Me, It is Hidden) Episode 106th December 2019 When Adam's girlfriend, Tamiko, is kidnapped right in front of him, he shuts out Five-0 and breaks all the rules in order to get her back. Also, Five-0 investigates three seemingly unconnected homicides. 11 Ka i ka ʻino, no ka ʻino (To Return Evil for Evil) Episode 1113th December 2019 When Five-0 investigates a tourist helicopter that was shot down by a missile, they trace the stolen artillery to a ghost from McGarrett’s past. After Adam’s ordeal in rescuing Tamiko and reconnecting with the Yakuza, he makes a bold decision about his future with Five-0. 12 Ihea ʻoe i ka wa a ka ua e loku ana (Where Were You When the Rain Was Pouring?) (I) Episode 123rd January 2020 When a list of undercover CIA agents is stolen, Steve and Five-0 enlist the help of Magnum, Higgins, Rick and TC to get it back and protect national security. Also, Higgins gives Tani some personal advice. The crossover continues on Magnum P.I. S02E12 Desperate Measures (II). 13 Loa’a pono ka ‘iole i ka punana (The Rat Was Caught Right in the Nest) Episode 1310th January 2020 Grover and Five-0 investigate a murder at a private golf course involving a man who was frozen to death in the locker room's cryo-chamber. Also, McGarrett tags along with Danny when he tracks down the father of a boy who has been bullying Charlie. 14 I hoʻolulu, hoʻohulei ʻia e ka makani (There Was a Lull, and Then the Wind Began to Blow About) Episode 1431st January 2020 Soon after Danny meets the girl of his dreams, they get into a potentially fatal car accident in an area far from help. Also, McGarrett enlists Quinn and Tani to help when Eddie the dog suddenly shows signs of PTSD. 15 He waha kou o ka heʻe (Yours is the Mouth of an Octopus) Episode 157th February 2020 When Grover's niece, Siobhan goes missing from the police academy and it's discovered her boyfriend is an undercover member of the Yakuza, Adam may be her only hope of rescue. 16 He kauwa ke kanaka na ke aloha (Man is a Slave of Love) Episode 1614th February 2020 On Valentine's Day, Tani and Noelani are held hostage during a convenience store robbery. Also, Five-0 investigates the murder of a Thai diplomat whose wife confesses to the crime, but Danny suspects she's covering for the real hugger. 17 He kohu puahiohio i ka hoʻolele i ka lepo i luna (Like a Whirlwind, Whirling the Dust Upward) Episode 1721st February 2020 Harry Langford helps Five-0 investigate a series of murders that follow the plot of a fabled unpublished crime novel from the 1920s. Also, Tani and Junior's friendship takes a meaningful new turn. 18 Nalowale i ke ʻehu o he kai (Lost in the Sea Sprays) Episode 1828th February 2020 While Five-0 investigates a murder on a cargo ship where pirates impersonated the Coast Guard to board the boat, Adam finally gets the evidence he needs to take down the Island’s Yakuza operation once and for all. Quinn helps Noelani when she suspects that her uncle didn’t die of natural causes. 19 E hoʻi na keiki oki uaua o na pali (Home Go The Very Tough Lads of The Hills) Episode 196th March 2020 While Five-0 investigates when a rancher is murdered after he uncovers human skeletons on his property where legend says that Civil War-era gold coins were buried, Quinn's former stepdaughter, Olivia, reaches out to her for help after her father doesn't come home. 20 He puheʻe miki (A Gripping Cuttlefish) Episode 2013th March 2020 While Five-0 investigates a scheme to rob tourists, Tani helps Girard Hirsh (Willie Garson) prove the innocence of his elderly uncle when he’s suspected of murder. Also, Tani and Junior work on the nuances of being in a new relationship 21 A ʻohe ia e loaʻa aku, he ulua kapapa no ka moana (He Cannot Be Caught for He Is an Ulua Fish of the Deep Ocean) Episode 2127th March 2020 After Steve receives a posthumous letter from his mother that contains a cypher, Danny is attacked by someone willing to kill to steal it. Five-0 must help Lincoln Cole, an anonymous good Samaritan who’s in the crosshairs of some very dangerous people. 22 Aloha (Goodbye) Episode 223rd April 2020 Danny is abducted and badly wounded by Wo Fat's wife, who is after the cypher Steve's mother left him. Steve works to solve the case his father left for him 10 years ago.