Hawaii Five-0 is an American police procedural drama television series developed for CBS by Roberto Orci, Alex Kurtzman and Peter M. Lenkov. It is a reboot of the 1968–1980 series (the original series had the letter "O" in its title, the 2010 series has the number zero), which also aired on CBS. The series starred Alex O'Loughlin and Scott Caan and centers around a fictional special police major crimes task force operating at the behest of the governor of Hawaii. It was produced by K/O Paper Products and 101st Street Television, initially in association with CBS Studios. The series premiered on September 20, 2010, airing for ten seasons, with the finale airing on April 3, 2020.

Alongside O'Loughlin and Caan, the cast originally consisted of Daniel Dae Kim and Grace Park, both of whom left after season seven. Other cast mates included Taryn Manning, Masi Oka, Lauren German, Michelle Borth, Chi McBride, Jorge Garcia, Meaghan Rath, Taylor Wily, Dennis Chun, Kimee Balmilero, Beulah Koale, Ian Anthony Dale and Katrina Law. The series aired on Mondays for its first three seasons. Beginning with season four, the program was moved to Fridays.

The series takes place in the same fictional universe with fellow reboot series MacGyver and Magnum P.I., both of which were also developed by Peter M. Lenkov. The three shows have been collectively referred to as the "Lenkov-verse", and Hawaii Five-0 had crossover episodes with both of the others. The series also exists in the same fictional universe as the NCIS franchise by way of a crossover event with NCIS: Los Angeles.

Hawaii Five-0 received praise for its modern take on the original series, and was a solid ratings performer for CBS at the time of its release. The series received several award nominations including a Golden Globe Award for Best Supporting Actor – Series, Miniseries or Television Film for Caan, and three Teen Choice Awards for Choice TV Action Show, Choice TV Action Actor for Dae Kim and Choice TV Action Actress for Park. In addition, the series also made a positive effect on the Hawaii economy.

Premise The series covers the actions of the Hawaii Five-0 Task Force, a fictional small, specialized Hawaii Department of Public Safety major crimes task force headed by former United States Navy SEAL Lieutenant Commander Steve McGarrett (United States Navy Reserve). The task force answers only to the Governor of Hawaii and is given full immunity and means. The task force has no restrictions and is always backed by the Governor. The team is able to investigate crimes ranging from terrorism to kidnapping as well as murder and robberies.

Steve McGarrett recruits Honolulu Police Department Detective-Sergeant Danny "Danno" Williams as his partner and unofficial second in command of the team. He fills out the team by recruiting ex-HPD Detective-Lieutenant Chin Ho Kelly, his father's protégé, and Chin's cousin, Officer Kono Kalakaua, a rookie HPD officer. Department of Homeland Security Special Agent Lori Weston is also assigned to the team later on, although she is later forced to return to the DHS by the Governor. They are assisted by Dr. Max Bergman, a medical examiner for the City and County of Honolulu. Steve later adds Captain Lou Grover, a HPD SWAT commander and a transfer from the Chicago Police Department, Special Consultant Jerry Ortega, Chin's high school classmate, a conspiracy theorist and a consultant for the task force, and for a brief time, Lieutenant Catherine Rollins, Steve's girlfriend and ex-US Navy Office of Naval Intelligence. Following Max, Chin, and Kono's departures, Max is replaced by medical examiner Dr. Noelani Cunha, and McGarrett fills in Chin and Kono's spots by hiring high-achieving HPD academy washout Tani Rey and ex-US Navy SEAL Special Warfare Operator Second Class-turned-Police Candidate Junior Reigns. Later on, Kono's husband Adam Noshimuri joins the task force following the couple's divorce, and shortly after Jerry's departure, United States Army CID Staff Sergeant Quinn Liu is recruited in his place. The team is also assisted by confidential informant Kamekona Tupuola, and HPD liaison Sergeant Duke Lukela.

Cast and characters

Main

Alex O'Loughlin as Lieutenant Commander Steve McGarrett, USNR. A decorated former Navy SEAL, Steve McGarrett is head of the Five-0 Task Force and son of retired HPD Sergeant John McGarrett. John's murder and storyline forms the premise of Steve's return to Hawaii and the formation of the Task Force. Scott Caan as Detective Sergeant Danny Williams. He is a divorced single father who transferred from Newark PD in New Jersey to be with his daughter and is the de facto second-in-command of Five-0. Daniel Dae Kim as Detective Lieutenant Chin Ho Kelly, (seasons 1–7). A veteran HPD detective, he was John McGarrett's former rookie and provides technical expertise and local know-how. During the season 7 finale, Chin is offered the lead position of the Five-0 Task Force established in San Francisco, which he later accepts. This was written into the show after Kim departed the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS. Kim had been seeking pay equality with fellow cast members Alex O'Loughlin and Scott Caan, but CBS's final offer to Kim was 10–15% lower than what O'Loughlin and Caan made in salary. Grace Park as Officer Kono Kalakaua, (seasons 1–7). A former surfer, she was personally recruited by Steve McGarrett while still in her final days at the HPD Academy. She is the cousin of Lieutenant Kelly, and later becomes the wife of Adam Noshimuri. In the conclusion of the season 7 finale, Kono is seen aboard a flight to Carson City, Nevada, where it is later revealed she has since joined a task force aimed at combating sex trafficking. This was written into the show following Park's departure from the series in late June 2017 prior to the start of production of the eighth season due to a salary dispute with CBS. Park had been seeking pay equality with stars Alex O'Loughlin and Scott Caan, but CBS's final offer to Park was 10–15% lower than what O'Loughlin and Caan made in salary. Taryn Manning as Mary Ann McGarrett, (season 1; guest seasons 2–4, 6 & 9) Steve's younger sister who lives in Los Angeles and occasionally visits Hawaii. At the beginning of the series she and Steve are largely estranged from each other, but as time goes on gradually begin to make amends. Mary works various odd jobs including flight attendant and caregiver before adopting a baby girl whom she names Joan (later nicknamed 'Joanie') after their father. Masi Oka as Dr. Max Bergman (seasons 2–7; recurring season 1; guest season 10), the eccentric and well-respected County of Honolulu medical examiner. He departs the series midway through season 7 upon joining Doctors without Borders in Africa. Lauren German as Special Agent Lori Weston (season 2; guest season 2). A senior DHS agent assigned to Five-0 to provide oversight. Michelle Borth as Lieutenant Catherine Rollins, USNR (seasons 3–4; recurring seasons 1 & 6; guest seasons 2, 5 & 7–10). A former Navy Intelligence officer and McGarrett's girlfriend. Chi McBride as Captain Lou Grover, (seasons 4–10; guest season 4). A transfer from Chicago PD who has two children with his wife Renée. Jorge Garcia as Special Consultant Jerry Ortega (seasons 5–10; recurring season 4), a conspiracy theorist who assisted Five-0 during several investigations and was eventually hired as a "consultant". Meaghan Rath as Officer Tani Rey (seasons 8–10), whom McGarrett recruits from her job as a hotel pool lifeguard after being kicked out of the police academy, despite being a first-rate candidate. She initially declines to join but later becomes a team member. Taylor Wily as Kamekona Tupuola (seasons 8–10; recurring seasons 1–7), a rehabilitated ex-convict, turned entrepreneur and owner of the Waiola Shave Ice, Kamekona's Shrimp Truck, and Kamekona's Helicopter Tours. He is a CI for the Five-0 Task Force and their friend. Dennis Chun as Sergeant Duke Lukela (seasons 8–10; recurring seasons 1–7), HPD officer who often acts as a liaison to Five-0. He was one of the few HPD cops who was not antagonistic towards Danny or the other Five-0 members from the beginning, as he was colleagues with Steve's father and also personally knew Chin and Kono's family. In "Hookman", he was shot by Curt Stoner (Peter Weller), but survived and recovered. Dennis Chun is the son of Kam Fong Chun, who played Chin Ho Kelly in the original series. Kimee Balmilero as Dr. Noelani Cunha (seasons 8–10; recurring season 7), a medical examiner who took over to assist the team after Max's departure. She is often seen joining in with the team during holidays and celebrations. Beulah Koale as Officer Junior Reigns (seasons 8–10), a former Navy SEAL ranked Special Warfare Operator Second Class who asks McGarrett, a fellow SEAL, for a job. Initially turned down he returns to McGarrett a second time. McGarrett later introduces him to Duke Lukela and informs him that before becoming a member of Five-0 he will need to join and finish the police academy. Ian Anthony Dale as Adam Noshimuri (seasons 8–10; recurring seasons 2–7), a member of the Five-0 Task Force; formerly the Head of Five-0 Task Force Special Division of Organized Crime; Kono's ex-husband, and a confidential informant to Five-0. Katrina Law as Sergeant Quinn Liu (season 10), a former staff sergeant with Army CID demoted for insubordination.

Recurring

Teilor Grubbs as Grace Williams (seasons 1–7, 9-10). William Sadler as John McGarrett (seasons 1–10) Mark Dacascos as Wo Fat (seasons 1–5, 9, 10). Will Yun Lee as Sang Min Soo (seasons 1–3, 5–7). Al Harrington as Mamo Kahike (seasons 1–2, 4–7, 9). Claire van der Boom as Rachel Edwards/Hollander (seasons 1–2, 5, 7–9). Brian Yang as HPD forensic scientist Charles "Charlie" Fong (seasons 1–5). Kala Alexander as Kawika (seasons 1–6) Reiko Aylesworth as Dr. Malia Waincroft (seasons 1–4). James Marsters as Victor Hesse (seasons 1–2, 5). Jean Smart as Governor Patricia "Pat" Jameson (season 1). Kelly Hu as Laura Hills (season 1). Terry O'Quinn as Joe White (seasons 2–10) Autumn Reeser as Dr. Gabrielle "Gabby" Asano (seasons 2–4). Richard T. Jones as Governor Sam Denning (seasons 2–4). William Baldwin as Frank Delano (seasons 2–3). Tom Sizemore as Captain Vince Fryer (season 2). Shawn Mokuahi-Garnett as Shawn "Flippa" Tupuola . (season 3–10). Shawn Anthony Thomsen as Officer Pua Kai (season 3–9). Duane "Dog" Chapman as himself. (season 3–10). Andrew Lawrence as Eric Russo (seasons 3, 6–9). Christine Lahti as Doris McGarrett (seasons 3–10) Justin Bruening as Lieutenant Commander William "Billy" Harrington (seasons 3–4). Daniel Henney as Michael Noshimuri (season 3). Nick Jonas as Ian Wright (season 4) Michelle Hurd as Renee Grover (seasons 4–6, 8–10). Paige Hurd as Samantha Grover (seasons 4–6, 8). Lili Simmons as Amber Vitale / Melissa Armstrong (seasons 4–7). Christopher Sean as Gabriel Waincroft (seasons 4–6). Carol Burnett as Deb McGarrett (seasons 4–6) Melanie Griffith as Clara Williams (seasons 4–6). Joey Defore and Zach Sulzbach as Charlie Williams (season 5–10). Kekoa Kekumano as Nahele Huikala (season 5–9). Willie Garson as Gerard Hirsch (seasons 5–10). Amanda Setton as Dr. Mindy Shaw (season 5). Michael Imperioli as Odell Martin (seasons 5, 6, and 8) Mirrah Foulkes as Ellie Clayton (season 5). Chosen Jacobs as Will Grover (season 6–9). Michelle Krusiec as Michelle Shioma (seasons 6–8). Julie Benz as Detective Abby Dunn (seasons 6–7). Londyn Silzer as Sara Diaz (seasons 6–7). Sarah Carter as Lynn Downey (seasons 6–7). Ingo Rademacher as Robert Coughlin (seasons 6–7). Claire Forlani as Alicia Brown (season 7–8). Chris Vance as Commander Harry Langford (season 7–10). Kunal Sharma as Koa Rey (season 8–9). Christine Ko as Jessie Nomura (season 8).