(The Rat Was Caught Right in the Nest) 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. McGarrett tags along with Danny when he tracks down the father of a boy who has been bullying Charlie.

The episode was rated 7.74 from 475 votes.

(Like a Whirlwind, Whirling the Dust Upward) Harry Langford helps Five-0 investigate a series of murders that follow the plot of a fabled unpublished crime novel from the 1920s. Tani and Junior’s friendship takes a meaningful new turn.

The episode was rated 7.75 from 431 votes.

(Lost in the Sea Sprays) 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.

The episode was rated 7.75 from 420 votes.

(Knocked Flat by The Wind; Sudden Disaster) 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. Also, Eddie the dog uses his field experience and sniffs out a bomb that has been planted in McGarrett’s home.

The episode was rated 7.75 from 619 votes.

(The Trunkless Tree of Kahilikolo) 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. Danny moves in with McGarrett.

The episode was rated 7.76 from 500 votes.

(Tiny is the Flower, Yet It Scents the Grasses Around It) 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.

The episode was rated 7.76 from 594 votes.

(Yours is the Mouth of an Octopus) When Grover’s niece 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.

The episode was rated 7.77 from 450 votes.

(To Return Evil for Evil) 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.

The episode was rated 7.80 from 469 votes.

(Passing Time Obscures the Past) 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.

The episode was rated 7.80 from 597 votes.

(DNA) 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.

The episode was rated 7.82 from 551 votes.

(The Skin Has Been Hurt by The Point of The Spear) A new ally helps McGarrett and Five-0 when mob bosses on the island are being targeted by an assassin. Five-0 says goodbye to one of their own.

The episode was rated 7.85 from 654 votes.

(A Gripping Cuttlefish) While Five-0 investigates a scheme to rob tourists, Tani helps Girard Hirsh prove the innocence of his elderly uncle when he’s suspected of murder. Tani and Junior work on the nuances of being in a new relationship.

The episode was rated 7.86 from 408 votes.

(Where Were You When the Rain Was Pouring?) 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. Higgins gives Tani some personal advice. Part 2 airs on Magnum P.I.

The episode was rated 7.89 from 551 votes.

(He Cannot be Caught for He is an Ulua Fish of the Deep Ocean) 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.

The episode was rated 7.92 from 441 votes.

(Goodbye) 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.

The episode was rated 8.14 from 417 votes.