CBS books a new version of the classic `Hawaii Five-0' series, with Alex O'Loughlin in the lead role as Det Steve McGarrett and Scott Caan portraying Danno. The detectives are part of an elite task force whose mission is to eliminate crime on the beaches of the Aloha State. Assisting McGarrett and Danno is former Honolulu Police detective Chin Ho Kelly, who has been relegated to a federal security patrol after being wrongfully accused of corruption. Chin's fresh-out-of-the-academy cousin, Kono, also joins the team as she tries to establish herself among the department's elite.
Danger awaits newlyweds Kono and Adam as the slick crime drama returns. (S6, ep 1)
A bomb squad falls victim to a deadly attacker who is eager to strike a deal. Adam and Kono realise they are being watched. (S6, ep 2)
The team investigate the death of a diver. McGarrett prepares to propose to Catherine. (S6, ep 3)
Ka Papahana Holo Pono (Best Laid Plans): The team investigate the strange death of a wealthy recluse. Adam faces a terrible ordeal at the hands of the Yakuza. (S6, ep 4)
Five-0 hunt for a killer who escaped a murder scene by pulling off a daredevil motorbike stunt. They also gear up for a mud run. (S6, ep 5)
Five-0 join the bloody trail of a serial killer inspired by Frankenstein. Jerry calls the team when an armed gang raid a blood bank. (S6, ep 6)
Na Kama Hele (Day Trippers): McGarrett's first date with Lynn turns deadly when they are targeted by a mob boss. Elsewhere, Chin and co race to prevent a murder. (S6, ep 7)
Piko Pau 'Iole (The Artful Dodger): Five-0 joins forces with a con man to solve a murder case. Chin gets some help as he investigates the deaths of five arms dealers. (S6, ep 8)
Danny goes undercover as a teacher as the team investigate the murder of a college professor. (S6, ep 9)
Ka Makau Kaa Kaua (Sweet Science): Five-O point the finger at an outspoken champion boxer from the mainland, when the brother of a promising local ringster is murdered. (S6, ep 10)
Kamekona's dark past comes back to haunt him. McGarrett and Danny work on their partnership issues. (S6, ep 11)
Five-0 spring into action when unstable WWII bombs are stolen. McGarrett's Aunt Deb pays a visit. (S6, ep 12)
Grover heads to Chicago to extract a confession from a man who has killed his wife. Two killers hold Chin and Kono at gunpoint. (S6, ep 13)
Steve McGarrett and the team investigate a double murder. They also revisit their Valentine's Day disasters. (S6, ep 14)
McGarrett partners with a young man whose only friend has been murdered. Plus, the FBI question Danny's mother. (S6, ep 15)
When the task force's long-time informant is accused of murder, McGarrett brings in an old friend to defend him. (S6, ep 16)
McGarrett and Five-0 search for a Russian spy who throws the life of one of their own into jeopardy when he steals NSA secrets. (S6, ep 17)
Five-0 uncover a deadly slave trading operation after a man is found drifting off the coast. (S6, ep 18)
Grover is forced to take his family on the run when a case from 15 years ago comes back to haunt him. (S6, ep 19)
Five-0 investigate the theft of an advanced piece of military technology. Jerry helps his sister with another important mission. (S6, ep 20)
Five-O launch a manhunt when a chemical spill allows six inmates, including Kono's husband Adam, to break out of jail. (S6, ep 21)
Five-0 race to save the life of a kidnapped student. A shipwrecked Max, Kamekona and Flippa fight for their survival. (S6, ep 22)
When a woman is found murdered in her home, Five-0 discovers a strong link between the victim and one of their own. (S6, ep 23)
Pa'a Ka 'ipuka I Ka'upena Nananana (The Entrance Is Stopped With A Spider's Web): Five-0 fight to protect a wounded Gabriel when he is targeted by enemy gunmen. (S6, ep 24)
O ke ali'I wale no ka'u makemake (My Desire Is Only For The Chief): Danny makes a life-or-death decision when things go wrong undercover. Season finale. (S6, ep 25)