Episodes
Episode: 6x01 | Airdate: Sep 25, 2015
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:
Episode: 6x02 | Airdate: Oct 2, 2015
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.
Episode: 6x03 | Airdate: Oct 9, 2015
While Five-0 investigates a scuba diver's death from a gun recently used in another murder, McGarrett prepares to propose to Catherine
Episode: 6x04 | Airdate: Oct 16, 2015
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.
Episode: 6x05 | Airdate: Oct 23, 2015
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.
Episode: 6x06 | Airdate: Oct 30, 2015
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
Episode: 6x07 | Airdate: Nov 6, 2015
McGarrett's first date with Lynn 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
Episode: 6x08 | Airdate: Nov 13, 2015
Five-0 must work with charming con man Hank Weber to find a killer when his female partner is murdered on the job. Also, San Francisco Police Inspector Abby Dunn comes to O'ahu and works with Chin to investigate the murders of five Chinese arms dealers.
Episode: 6x09 | Airdate: Nov 20, 2015
Five-0 goes back to school when a college professor is killed and Danny goes undercover as his replacement
Episode: 6x10 | Airdate: Dec 11, 2015
It's fight night on O'ahu! Five-0 investigates when the brother of the promising local boxer is murdered and the prime suspect is the outspoken reigning champion opponent from the mainland.
Episode: 6x11 | Airdate: Jan 8, 2016
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.
Episode: 6x12 | Airdate: Jan 15, 2016
While McGarrett's Aunt Deb visits Oahu on a special personal mission, Five-0 must uncover who stole unstable Japanese WWII bombs left hidden on the island.
Episode: 6x13 | Airdate: Jan 22, 2016
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.
Episode: 6x14 | Airdate: Feb 12, 2016
As Five-0 investigates a double homicide involving marital infidelity, McGarrett and the team recount their disastrous Valentine's Day experiences.
Episode: 6x15 | Airdate: Feb 19, 2016
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.
Episode: 6x16 | Airdate: Feb 26, 2016
When Five-0's sketchy confidential informant is accused of murder, McGarrett asks his old friend Odell Martin to defend him.
Episode: 6x17 | Airdate: Mar 11, 2016
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 and Five-0
Episode: 6x18 | Airdate: Apr 1, 2016
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.
Episode: 6x19 | Airdate: Apr 8, 2016
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.
Episode: 6x20 | Airdate: Apr 15, 2016
While Five-0 investigates the theft of a high tech, indestructible suit built for the U.S. military, Jerry helps his sister try to save a captive elephant.
Episode: 6x21 | Airdate: Apr 22, 2016
Five-0 goes on a manhunt when a chemical spill permits six dangerous inmates to escape, including Kono's husband, Adam.
Episode: 6x22 | Airdate: Apr 29, 2016
Five-0 tries to save a kidnapped college student from a dangerous vigilante. Meanwhile, Max, Kamekona and Flippa fight to survive after being shipwrecked.
Episode: 6x23 | Airdate: May 6, 2016
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.
Episode: 6x24 | Airdate: May 13, 2016
Trapped inside a dilapidated building in Oahu's Chinatown, Five-0 must protect a wounded Gabriel and plan their escape when enemy gunmen storm the building looking to kill him and anyone who gets in their way.
Episode: 6x25 | Airdate: May 13, 2016
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.