Season 8

Episode Guide

A'ole e 'olelo mai ana ke ahi ua ana ia (Fire Will Never Say that It Has Had Enough)

S8 E1
Sep 30, 2017
McGarrett and Danny recruit Tani Rey (Meaghan Rath) to join the task force when diabolical hacker Aaron Wright (Joey Lawrence) releases a dangerous arsonist from prison, on the eighth season premiere of Hawaii Five-0.

Na la 'ilio (Dog Days)

S8 E2
Oct 7, 2017
McGarrett and Five-0 work with an injured police dog who is the only witness to an ambushed drug bust. Also, McGarrett is visited by Junior Reigns, a former SEAL, who is looking to join the task force.

Kau pahi, ko'u kua. Kau pu, ko'u po'o. (Your Knife, My Back. My Gun, Your Head.)

S8 E3
Oct 14, 2017
Five-0 enlists the help of an old friend when the boss of a major crime family is murdered, triggering revenge killings across the island. Also, MacGarrett and Danny begin sorting out particulars in their new restaurant venture.

E uhi wale no 'a'ole e nalo, he imu puhi (No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise)

S8 E4
Oct 21, 2017
The lives of Five-0's informants are in danger when the HPD system is hacked and one ends up dead, forcing McGarrett to enlist the help of hacker Aaron Wright (Joey Lawrence), who he just imprisoned.

Kama'oma'o, ka 'aina huli hana (At Kama'oma'o, The Land of Activities)

S8 E5
Nov 4, 2017
At Halloween, Five-0 must investigate a string of murders that mirror stories from well-known Hawaiian folklore.

Mohala i ka wai ka maka o ka pua (Unfolded by the Water are the Faces of the Flowers)

S8 E6
Nov 11, 2017
The murder of two tourists leads Five-0 to a man suffering from multiple personality disorder, where one of them becomes violent and another is a child.

Kau ka 'onohi ali'i i luna (The Royal Eyes Rest Above)

S8 E7
Nov 18, 2017
Junior and Adam back up McGarrett when a bank heist in progress forces Steve to make a potentially heartbreaking mistake.

He Kaha Lu'u Ke Ala, Mai Ho'okolo Aku (The Trail Leads to a Diving Place; Do Not Follow After)

S8 E8
Dec 2, 2017
McGarrett poses as a pilot to investigate the cause of a plane crash that led to the death of a pilot in an air race.

Make me kai (Death at Sea)

S8 E9
Dec 9, 2017
When investigating a deserted yacht adrift at sea, McGarrett, Danny, Tani and Junior are exposed to a deadly bioweapon and the rest of Five-0 have only eight hours to find an antidote.

I ka wa ma mua, I ka wa ma hope (The Future is in the Past)

S8 E10
Dec 16, 2017
When Danny is shot while quarantined in the hospital with McGarrett, Tani and Junior, he's left unconscious and clinging to life, imagining a future for everyone in Five-0.

Oni kalalea ke ku a ka la'au loa (A Tall Tree Stands Above the Others)

S8 E11
Dec 16, 2017
It's Christmas Eve and Danny tells Charlie a bedtime story about a recent Five-0 case involving bad Santas and a holiday miracle.

Ka Hopu Nui 'Ana (The Round Up)

S8 E12
Jan 6, 2018
When an FBI agent who was cracking down on organized crime is killed, McGarrett rounds up every gang-related criminal on the island to find the culprit. Also, McGarrett tasks Adam with forming a new division within Five-0 to take on organized crime.

O Ka Mea Ua Hala, Ua Hala Ia (What Is Gone Is Gone)

S8 E13
Jan 13, 2018
When a man accused of killing his wife threatens to commit suicide, Grover reveals how he too was once on the brink of taking his own life.

Na Keiki A Kalahaohia (The Children Of Kalaihaohia)

S8 E14
Jan 20, 2018
When the corpse of a diamond smuggler is stolen from a graveyard, Five-0 tracks down his partner, Voss (guest star 'American Idol' winner Phillip Phillips), who will stop at nothing to retrieve their latest batch of contraband.

He Puko'a Kani'aina (A Coral Reef Strengthens Out Into Land)

S8 E15
Feb 3, 2018
McGarrett and Danny investigate the murder of a private detective whose client was killed the same way, and Adam sends Jessie (Christine Ko) into a dangerous situation with disastrous consequences.

O Na Hoku O Ka Lani Ka I 'Ike La Pae (Only The Stars of Heaven Know Where Pae Is.)

S8 E16
Mar 3, 2018
Tani and Junior go undercover as prospective parents in order to infiltrate a private school where the headmaster was murdered.

Holapu Ke Ahi, Koe Iho Ka Lehu (The Fire Blazed Up, Then Only Ashes Where Left)

S8 E17
Mar 10, 2018
Adam's mission to take down organized crime on the Island goes sideways when deadly chlorine gas he was using to bait a big fish falls into the wrong hands.

E Ho'oko Kuleana (To Do One's Duty)

S8 E18
Mar 31, 2018
The ex-wife of the man who shot Danny comes to Oahu and reveals how Danny's protection during a dangerous domestic dispute when he was in New Jersey helped save her life.

Aohe Mea Make I Ka Hewa: Make No I Ka Mihi Ole. (No one has ever died for mistakes he has made; only because he didn't repent.)

S8 E19
Apr 7, 2018
A hitman, Leroy Davis (Frankie Faison), McGarrett's father failed to arrest comes to McGarrett to finally confess his crimes and admit where he buried his victims.

He Lokomaika'i Ka Manu O Kaino (Kind is the Bird of Kaiona)

S8 E20
Apr 14, 2018
Catherine Rollins (Michelle Borth) recruits McGarrett and Jerry to help her track down a uranium deposit thought to be hidden on an abandoned Hawaiian island before a suspected terrorist can make dirty bombs with it.

Ahuwale Ka Nane Huna (The Answer to the Riddle is Seen)

S8 E21
Apr 21, 2018
Harry Langford (Chris Vance) enlists McGarrett and Danny's help to track down Lady Sophie (Alana Boden), a teenage British royal who has run away while under his protection.

Kopi wale no i ka i'a a 'eu no ka ilo. (Though the Fish is Well Salted, the Maggots Crawl.)

S8 E22
Apr 28, 2018
Five-0 must help Duke after he is forced to steal crucial evidence from the police locker in exchange for his kidnapped granddaughter.

Ka Hana A Ka Makua, O Ka Hana No Ia A Keiki (What Parents Will Do, Children Will Do)

S8 E23
May 5, 2018
McGarrett and Five-0 take on the mob when a former boss is killed and Junior's friend Cammy Lin (Cindy Chu) is on the run after witnessing the hit.

Ka Lala Kaukonakona Haki 'Ole I Ka Pa A Ka Makani Kona (The Tough Branch that Does Not Break in the Kona Gale)

S8 E24
May 12, 2018
McGarrett joins Junior and his SEAL Team on a high risk covert mission to capture an elusive target who is holding his mentor, Joe White (Terry O'Quinn), hostage.

Waiho Wale Kahiko (Ancients Exposed)

S8 E25
May 19, 2018
McGarrett and Five-0 discover a Russian spy ring hiding in plain sight when a Russian nuclear attack submarine appears off the coast of Waikiki.