Season 6

Episode Guide

Mai ho`oni i ka wai lana malie (Do Not Disturb the Water that is Tranquil)

S6 E1
A murder leads Five-0 to investigate a centuries-old Oahu palace raid involving pirates, buried treasure and a killer who is using a stolen painting as a map. Also, the morning after their wedding, Kono and Adam are threatened and tortured by Gabriel, and Danny shows concern for McGarrett regarding Catherine's return to the island, on the sixth season premiere.

Lehu a Lehu (Ashes To Ashes)

S6 E2
Five-0 investigates when a bomb squad is attacked and the culprit threatens to detonate additional hidden explosive devices unless arsonist Jason Sinclair is released from prison. Also, after Adam returns from the hospital, Kono realizes that they are being watched, and McGarrett prepares to take his relationship with Catharine to the next level. Former UFC Champion Randy Couture returns.

Ua 'o'oloku ke anu i na mauna (The Chilling Storm is on the Mountain)

S6 E3
While Five-0 investigates a scuba diver's death from a gun recently used in another murder, McGarrett prepares to propose to Catherine . Andrew Lawrence and Michelle return.

Ka Papahana Holo Pono (Best Laid Plans)

S6 E4
Five-0 investigates when a wealthy recluse is found dead in a remote field with nearly one million dollars in counterfeit bills. Also, Adam is kidnapped by the Yakuza and forced to torture one of Gabriel's men. Jerry Rice guest stars.

Ka 'alapahi nui (Big Lie)

S6 E5
Five-0 must interrogate members of a stunt bikers gang to find a killer who escaped by jumping his motorcycle from one roof onto another. Also, the team prepares to race in a Tough Mudder competition.

Na Pilikua Nui (Monsters)

S6 E6
It's Halloween in O'ahu, and Five-0 must track down a serial killer inspired by Frankenstein. Also, Jerry calls Five-0 for help when an armed gang raids a blood bank, and Danny must track down Grace who lied and snuck out to a Halloween party.

Na Kama Hele (Day Trippers)

S6 E7
McGarrett's first date with Lynn (Sarah Carter) on a deserted island turns deadly when a mob boss hiding there hunts them down in order to keep his location a secret. Also, Chin, Kono and Grover must race against the game clock to locate the father of a high school football star who will be murdered by a local gambler if his son doesn't throw the big game.

Piko Pau 'iole (The Artful Dodger)

S6 E8
Five-0 must work with charming con man Hank Weber (Kristoffer Polaha) to find a killer when his female partner is murdered on the job. Also, San Francisco Police Inspector Abby Dunn (Julie Benz) comes to O'ahu and works with Chin to investigate the murders of five Chinese arms dealers.

Hana Keaka (Charade)

S6 E9
Five-0 goes back to school when a college professor is killed and Danny goes undercover as his replacement.

Ka Makau Kaa Kaua (The Sweet Science)

S6 E10
Five-0 investigates when the brother of promising local boxer, Luke Nakano (Lewis Tan), is murdered and the prime suspect is Devon Haynes (Harold House Moore), the outspoken reigning champion opponent from the mainland.

Kuleana (One's Personal Sense of Responsibility)

S6 E11
While McGarrett and Danny attend a couples retreat in Maui to work on their partnership issues, Kamekona's dangerous past comes back to haunt him.

Ua ola loko i ke aloha (Hawaiian for "Love Gives Life Within)

S6 E12
While McGarrett's Aunt Deb (Carol Burnett) visits Oahu on a special personal mission, Five-0 must uncover who stole unstable Japanese WWII bombs left hidden on the island. Taryn Manning guest stars.

Umia Ka Hanu (Hold The Breath)

S6 E13
While Grover travels to Chicago to finally get a confession from Clay Maxwell about killing his wife, Chin and Kono are held at gunpoint by two killers who have no idea they are cops.

Hoa 'inea (Misery Loves Company)

S6 E14
As Five-0 investigates a double homicide involving marital infidelity, McGarrett and the team recount their disastrous Valentine's Day experiences. Masaharu Morimoto guest stars.

Ke Koa Lokomaika'i (The Good Soldier)

S6 E15
While Danny's mother is questioned by the FBI, McGarrett partners with a young man with autism who may have information to help solve the murder of his only friend. Melanie Griffith guest stars.

Ka Pohaku Kihi Pa'a (The Solid Cornerstone)

S6 E16
When Five-0's sketchy confidential informant is accused of murder, McGarrett asks his old friend Odell Martin to defend him. Michael Imperioli returns and Ziggy Marley guest stars.

Waiwai (Assets)

S6 E17
McGarrett and Five-0 must track down a Russian spy who has stolen a flash drive containing classified NSA information that puts the life of a member of their Ohana at risk. Also, McGarrett finally learns why Catherine left him, and Abby continues to conceal her actual mission from Chin.

Kanaka Hahai (The Hunter)

S6 E18
When a man is found left for dead drifting off the coast of Oahu, Five-0 uncovers a deadly slave trade operating aboard an illegal fishing vessel. Also, while Danny is out with his children, his car is stolen so he commandeers a bus to chase down the thieves.

Malama ka Po'e (Care For One's People)

S6 E19
A case from 15 years ago forces Grover to take his family on the run when a dangerous mob boss tracks him down to seek revenge.

Ka Haunaele (Rampage)

S6 E20
Five-0 investigates the theft of a high-tech, indestructible suit built for the U.S. military. Michael Bennett and Martellus Bennett guest star.

Ka Pono Ku'oko'a (The Cost of Freedom)

S6 E21
Five-0 goes on a manhunt when a deliberate chemical spill enables six dangerous inmates to escape, including Kono's husband, Adam (Ian Anthony Dale).

I'ike Ke Ao (For The World To Know)

S6 E22
Five-0 must save a kidnapped college student from a dangerous vigilante. Also Max, Kamekona and Flippa try to survive after being shipwrecked.

Pilina Koko (Blood Ties)

S6 E23
When a woman is murdered in her home, Five-0 learns that one of their own has a deep connection to the victim's young daughter. Elliott Gould guest stars.

Pa'a ka 'ipuka i ka 'upena nananana (The Entrance is Stopped with a Spider's Web)

S6 E24
Trapped inside a dilapidated building in Oahu's Chinatown, Five-0 must protect a wounded Gabriel (Christopher Sean) and plan their escape when enemy gunmen storm the building looking to kill him and anyone who gets in their way.

O ke ali'I wale no ka'u makemake (My Desire Is Only For The Chief)

S6 E25
In order to stop a meth epidemic on the Island, McGarrett and Danny go undercover as pilots, but when McGarrett is seriously wounded, Danny is forced to break their cover in order to save his partner's life.