Hawaii Five-O Wiki

<-----Season 3

Season 5 ----->

The fourth season of Hawaii Five-0 premiered on September 27, 2013 on CBS and concluded on May 9, 2014. The season consisted of 22 episodes.


  • From the Region 2 DVD*

The Hawaii Five-0 team faces some of their biggest challenges yet as they fight to keep paradise safe from the most dangerous criminals on the island. This season, Steve McGarrett (Alex O'Loughlin) and Detective Danny "Danno" Williams (Scott Caan) pursue an expert hacker and are taken hostage by an escaped convict who convinces them of his innocence while the danger of Kono's (Grace Park) relationship with the son of a Yakuza boss escalates. Chin Ho (Daniel Dae Kim) is investigated by Internal Affairs about his ties to the head of a drug cartel and Catherine (Michelle Borth) gains a spot on the team but must repay a debt of honor in Afghanistan. Joining the team this season is Captain Lou Grover (Chi McBride) who recently moved his family from Chicago to head the SWAT unit on the island. It's high-octane action that never lets up through 22 thrilling episodes that will keep you on the edge of your seat.


Main Cast[]

Recurring characters[]

Guest Stars[]



Title Written by Directed by Original air date Production code
Aloha ke kahi I ke kahi Peter M. Lenkov & Ken Solarz Bryan Spicer September 27, 2013 101
Aloha ke kahi I ke kahi
Season Premiere. With the NLM having stored the building where the H50 team's headquarters are, taking hostages, Steve and Danny face a battle on their hands and the stakes are raised when Catherine is kidnapped.
A'ale Ma'a Wau John Dove Joe Dante October 4, 2013 102
A'ale Ma'a Wau
The team investigate the murder of a man who work for a limo company and soon have a suspect: a highly-decorated Texas Ranger while Kono and Adam face a battle for survival after learning that their location has been compromised thanks to the events in the previous episode.
Ka 'oia'i'o ma loko Steven Lilien & Bryan Wynbrandt Duane Clark October 11, 2013 103
Ka 'oia'i'o ma loko
The H50 team investigate the death of a young, wealthy couple who were both murdered in their swimming pool while Catherine prepares to retire from the Navy for good.
A ia la aku Christina M. Kim & David Wolkove Bryan Spicer October 18, 2013 104
A ia la aku
A wedding ends in turmoil when the bride-to-be flees while a wedding crasher later turns up dead. As the team investigate, they find evidence that the bride has a shady past while Danny makes a decision, one that could ultimately affect his relationship with Gabby.
Kupu'eu Moira Kirland & Eric Guggenheim Jeffrey Hunt October 25, 2013 105
A routine surveillance job for Catherine and Billy ends in tragedy when they're both attacked by a hitman with Billy dying in hospital as a result of the injuries sustained in the fight, setting the H50 team on a search for the killer.
Kupouli ʻla Sue Palmer & David Wolkove John Terlesky November 1, 2013 106
Kupouli 'la
It's Halloween but the team aren't in the mood to celebrate as they search for a doctor who's performing illegal experiments on innocent people.
Ua Nalohia John Dove & Noah Nelson (Story), Bradley Paul (Teleplay) Joe Dante November 8, 2013 107
Ua Nalohia
The team investigate when a man is murdered and discover that the victim was an agent working undercover for ATF while playing babysitter to Mary's newly adopted daughter after Mary falls ill from food poisoning.
Akanahe Steven Lilien & Bryan Wynbrandt Jerry Levine November 15, 2013 108
With Danny in New Jersey visiting his parents, Steve must partner with Captain Lou Grover of the HPD's SWAT team as they attempt to serve an arrest warrant to a young man, only discover the man is hiding a sinister secret.
Ha'uoli La Ho'omoaika'i Eric Guggenheim & Moira Kirland Allison Liddi-Brown November 22, 2014 109
Ha'uoli La Ho'omoaika'i
The H50 team investigate when the badly disfigured body of an agent attached to the United States Secret Service is found in a barrel of lye while Steve and Mary are stunned when their aunt arrives in Hawaii for Thanksgiving.
Ho'onani Makuakane Peter M. Lenkov & Ken Solarz Larry Teng December 6, 2014 110
Ho'onani Makuakane
H50 investigate the attempted murder of a Pearl Harbor veteran and discover decades-old evidence concerning a horrific crime that took place at an Oahu internment camp during WWII.
Pukana Bill Haynes Bryan Spicer December 13, 2013 111
The team's investigation into the murder of a burglar takes a turn after evidence emerges, suggesting that the burglar might have been the victim of a serial killer who is responsible for torturing and killing fourteen women and Chin finds himself fighting for his life after he's captured by the killer.
O kela me keia manawa John Dove Peter Weller January 9, 2014 112
O kela me keia Manama
Steve helps Captain Lou Grover after one of Grover's friends apparently commits murder while Kono continues searching for Adam.
Hana Lokomaika'i Peter M. Tassler (Story), Peter M. Lenkov & Ken Solarz (Teleplay) Sylvain White January 17, 2014 113
Hana Lokomaika'i
Internal Affairs question Chin about his relationship with Dr. Malia Waincroft. As this goes on, the team investigate the murder of a DEA agent.
Na Hala a ka makua David Wolkove Peter Weller January 31, 2014 114
Na Hala a ka makua
Steve and Danny are kidnapped by a criminal who wants them and the team to prove that he is innocent after being found guilty of killing a real estate manager.
Pale'la Moira Kirkland Jerry Levine February 28, 2014 115
As the team investigate the murder of a real estate agent, Danny is left stunned when his mother arrives on the island, bringing with her troubling news.
Hoku Welowelo Steven Lilien & Bryan Wynbrandt Jeffrey Hunt March 7, 2014 116
Hoku Welowelo
The team investigate when three innocent people are gunned down on a boat and discover that the killings may be connected to a downed satellite owned by the Chinese while Grover takes Danny's mother on a ride-along.
Ma lalo o ka ili Bill Haynes (Story/Teleplay), John Dove (Teleplay) Bryan Spicer March 14, 2014 117
Ma Lalo o ka 'ili
The team jump into action when a raid results in a young teenage girl being kidnapped and her father being shot dead while Danny attempts to bring his parents back together and Jerry finds a clue that could prove useful in Steve's investigation of Wo Fat.
Ho'i Hou Christina M. Kim Sylvain White April 4, 2014 118
Ho'i Hou
A woman is murdered at Chin and Jerry's high school reunion, prompting the team to investigate while Steve and Danny travel to Cambodia to investigate a grave site.
Ku I Ka Pili Koko David Wolkove (Story), Steven Lilien & Bryan Wynbrandt (Teleplay) Maja Vrvilo April 11, 2014 119
Ku I Ka Pili Koko
Steve and Danny fight for their lives after being trapped in a building that is destroyed when a bomb explodes. With the time of the essence, Chin, Kono, Catherine and Grover must find a way to save the two men before it's too late.
Pe'epe'e Kanaka John Dove Jeff Cadiente April 25, 2014 120
Pe'epe'e Kanaka
The team investigate when a pool cleaner is gunned down and discover that a terrorist cell composed of young American college students may be planning an attack on American soil.
Makani 'Olu a Holo Malie Peter M. Lenkov & Ken Solarz (Story), Eric Guggenheim (Story/Teleplay) Jeffrey Hunt May 2, 2014 121
Makani 'Olu a Holo Malie
As the team tackle the case of a missing liver due for a lawyer, Steve and Catherine travel to Afghanistan to save a young boy who has been kidnapped by the Taliban but things take a turn for the worse when Steve winds up being captured by the same group of terrorists... This episode marks the final appearance of Catherine Rollins.
O ka Pili'Ohana ka 'Oi Peter M. Lenkov & Ken Solarz Bryan Spicer May 9 2014 122
O ka Pili'Ohana ka 'Oi 5
Season Finale. The team rush to Grover's aid when his teenage daughter is kidnapped by hacker, Ian Wright while Wo Fat escapes from prison with the intent of returning to Oahu.


  • Chi McBride would recur in this series and later he is now also starring in episode 10.
  • Michelle Borth announced that she is leaving the series at the end of this season, but we know now that she will return!
  • Nick Jonas and Tim Daly both made guest appearances in this season.
  Seasons of Hawaii Five-0
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