Hawaii Five-0 is an American police procedural drama television series and a re-imagining of the original 1968–1980 series about a new elite federalized task force whose mission is to wipe out the crime that washes up on the Islands' sun-drenched beaches.
Detective Steve McGarrett (Alex O'Loughlin), a decorated Naval officer-turned-cop, returns to Oahu to investigate his father's murder and stays after Hawaii's Governor persuades him to head up the new team: his rules, her backing, no red tape and full blanket authority to hunt down the biggest "game" in town.
Joining McGarrett is Detective Danny "Danno" Williams (Scott Caan), a newly relocated ex-New Jersey cop - a working man in paradise who prefers skyscrapers to the coastline - but whose committed to keeping the Islands safe for his 8-year-old daughter Grace (Teilor Grubbs); and Chin Ho Kelly (Daniel Dae Kim), an ex-Honolulu Police Detective, and former protégé of McGarrett's father, wrongly accused of corruption and relegated to a federal security patrol
In the Season 9 premiere, "Ka 'owili'oka'i (Cocoon)": After Steve's CIA agent friend is killed, McGarrett lets himself be captured by the group he thinks is responsible and endures a torturous sensory deprivation tank to find the killer.
Also, Tani wrestles with whether or not she will tell McGarrett about the murder weapon she found at Adam's house.
The episode is a retelling of the original series' pilot episode and was written by the late Leonard Freeman, creator of the original Hawaii Five-O, and current executive producer Peter M. Lenkov.
Mark Dacascos returns as McGarrett's nemesis, Wo Fat.
Hawaii Five-0 is produced by CBS Television Studios. Peter Lenkov, Alex Kurtzman, Roberto Orci and Eric Guggenheim are the executive producers.