In the season premiere, McGarrett refuses to listen to Danny's pleas to take it easy while recovering from surgery after the body of a serial killer is left in the Five-0 headquarters with an ivory chess piece in his mouth.
Episode 1
Makaukau ʻoe e Paʻani? (Ready to Play?)
Sep 23, 2016
When the bodies of two serial killers are found on Five-0 property with chess pieces in their mouths, McGarrett and the team hunt for a vigilante as fear grows that tourists aren't safe in Hawaii.
Episode 2
No ke aliʻi wahine a me ka ʻaina (For Queen and Country)
Sep 30, 2016
Five-0 must work with rogue MI-6 agent Harry Langford to find a terrorist planning to cause nuclear reactors across Europe to meltdown. Also, McGarrett and Danny ask retired FBI profiler Alicia Brown to help them find their serial killer vigilante.
Episode 3
He Moho Hou (New Player)
Oct 7, 2016
Alicia awakens in her bed to find another body with a chess piece in his mouth beside her. The team hunts for a cartel boss whose soldiers are gunning for a member of the team. Kono reconnects with Rosie.
Episode 4
Hu aʻe ke ahi lanakila a Kamaile (The Fire of Kamile Rises in Triumph)
Oct 14, 2016
Five-0 must find McGarrett and Alicia when they are kidnapped by the serial killer they’ve been hunting,
Episode 5
Ke Kū ‘Ana (The Stand)
Oct 21, 2016
When a cache of guns is stolen from a gun range, Five-0 discovers the culprit is intent on making a dramatic and potentially deadly statement on gun violence. Also, Kono and Adam are finally reunited when he is released from prison,
Episode 6
Ka hale hoʻokauweli (House of Horrors)
Oct 28, 2016
On Halloween, Five-0 investigates the murder of a medium with a checkered past who was apparently scared to death by a poltergeist. Also, Kono and Adam are kidnapped by what appears to be a death cult.
Episode 7
Ka makuahine a me ke keikikane (Mother and Son)
Nov 4, 2016
Five-0 must free McGarrett's mother, Doris, when Catherine informs them that she was captured and is about to be executed after attempting to free Wo Fat's imprisoned father. Also, Chin loses his appeal to have Sara's adoption delayed, and she must move to Mexico.
Episode 8
Hana Komo Pae (Right of Passage)
Nov 11, 2016
While Danny chaperones Grace’s winter formal, terrorists seize the venue and hold everyone hostage in order to kidnap a diplomat’s son
Episode 9
Elua la ma Nowemapa (Two Days in November)
Nov 18, 2016
When a conspiracy theorist with compelling evidence that JFK's cabinet ordered his assassination is murdered, Five-0 investigate's one of history's most notorious unsolved mysteries.
Episode 10
Ka Luhi (The Burden)
Dec 9, 2016
Five-0 investigates the 10-year-old cold case of a missing teen when a boy suffering from PTSD undergoes hypnosis and realizes he may have witnessed her murder. Also, Danny's sister, Bridget (guest star Missy Peregrym), visits Oahu for a business conference, and he suspects that she may be getting too close to a co-worker, on HAWAII FIVE-0
Episode 11
Kaʻili aku (Snatchback)
Dec 16, 2016
Five-0 races to Mexico where Chin puts his life on the line after his niece Sara is kidnapped.
Episode 12
Ka ʻaelike (The Deal)
Jan 6, 2017
The team handles the fallout in Mexico after Chins problems, back on the Island Grover goes undercover and things get hot.
Episode 13
Ua hoʻi ka ʻopua i Awalua (The Clouds Always Return to Alawua)
Jan 13, 2017
As Max prepares to say goodbye to his Five-0 ohana, they must investigate a murder during a police convention on the Island.
Episode 14
Ka laina ma ke one (Line in the Sand)
Jan 20, 2017
Five-0 must go up against an aggressive U.S. marshall, Lincoln, when a man wanted for murder escapes capture and seeks asylum in the sovereign land belonging to the Nation of Hawaii.
Episode 15
Ka Paʻani Nui (Big Game)
Feb 3, 2017
When working a murder case involving the illegal practice of shark finning, Five-0 uncovers the possibility that a former Nazi war criminal may be hiding out in an old leper colony in Hawaii.
Episode 16
Poniu I Ke Aloha (Crazy in Love)
Feb 10, 2017
While McGarrett and Danno celebrate Valentine's Day with their girlfriends, the rest of Five-0 investigates the murder of a man taking a class on how to land women.
Episode 17
Hahai i nā pilikua nui (Hunting Monsters)
Feb 17, 2017
McGarrett and Five-0 once again become entangled in the twisted mind games of serial killer Dr. Madison Gray when she stumbles into HPD covered in blood that matches Alicia Brown's, and claims amnesia.
Episode 18
E malama pono (Handle with Care)
Feb 24, 2017
MacGarrett and Danny finally track down the missing uranium, which has been used to build a bomb located in the middle of the jungle. Now, they must carefully extract the unstable explosive through treacherous terrain before it detonates.
Episode 19
Puka ʻana (Exodus)
Mar 10, 2017
McGarrett and Kono suspect that an abused young girl may be the victim of a sex trafficking ring on the Island. Also, Chin and Grover investigate a murder at a sober living facility.
Episode 20
Huikau na makau a na lawaiʻa (The Fishhooks of the Fishers Become Entangled)
Mar 31, 2017
Five-0 helps PI Harry Brown work the case of a kidnapped wealthy woman whose husband may have something to hide. Also, Rachel tells Danny that she is getting a divorce from Stan.
Episode 21
Ua maloʻo ka wai (The Water Is Dried Up)
Apr 7, 2017
McGarrett and Five-0 are captured and face certain death after tracking a dangerous nemesis to the Island of Lanai. Also, Grover takes his son to Chicago where he testifies against a dirty cop from his past.
Episode 22
Waimaka ʻeleʻele (Black Tears)
Apr 14, 2017
While working the murder case of one of the last survivors of the USS Arizona, McGarrett learns about his grandfather's important role at Pearl Harbor. Also, Adam uncovers bone fragments at his new construction job and asks Jerry to help him discreetly investigate.
Episode 23
Wehe ʻana (Prelude)
Apr 28, 2017
Danny protects a coma patient showing signs of waking who was the key witness from his last HPD case before he met Steve and joined Five-0.
Episode 24
He keʻu na ka ʻalae a Hina (A Croaking By Hina's Mudhen)
May 5, 2017
When McGarrett gets a tip that someone is plotting a terrorist attack on Oahu, Five-0 searches for those behind it before it’s too late. Also, Chin and Abby have a very difficult decision to make.
Episode 25
Ua mau ke ea o ka ʻaina i ka pono (The Life of the Land Is Perpetuated in Righteousness)
May 12, 2017
McGarrett risks his life when Five-0 attempts their most dangerous rescue yet of young girls trapped in the sex trafficking ring they have been tracking this year. Also, Kono, deeply affected by the case, makes a life-changing decision.