Danno and a college professor are taken captive by a group of young revolutionaries, their movement spearheaded by a ruthless criminal.

Desperate and burdened by considerable debt, geophysicist Bernard Brown devises a scheme. He intends to trigger an explosion within Hawaii Volcanoes National Park, directing a torrent of lava down the mountainside and towards the city of Hi…

Eddie Josephs, afflicted with paranoid schizophrenia, is enacting a series of murders inspired by cases from the police archives. McGarrett must decipher his cryptic clues and apprehend him before any further lives are lost.

A cunning thief has begun offering his ill-gotten gains to respectable merchants, and the police must devise a means to ensnare him.

Senator Harlan Henderson grapples with a fractured psyche, one facet of which harbors a profound desire for self-destruction. Yet, his internal turmoil erupts in a horrifying act: he detonates a bomb that claims the life of his secretary. …

Hobart, a criminal of some repute, is currently employing a firearm of particular notoriety in his liquor store heists. The weapon, once belonging to a police officer, is now sought back by the officer himself. Five years prior, the gun was…

The brutal death of a young man, the son of a formidable cattle baron, sends shockwaves through the territory. As justice seems unattainable, the baron himself steps into the void, threatening to unravel the very fabric of order. It falls t…

The murder investigation, initially a straightforward case of gangland violence, took an unsettling turn with the discovery that the deceased had lived a double life.

The detective was tasked with a perplexing problem: three state-of-the-art security systems were inexplicably failing to protect a series of invaluable artworks from theft. He had to determine the cause of this extraordinary vulnerability.

Following a targeted attack, Steve McGarrett finds himself increasingly drawn to a woman who deals in art. Yet, even this connection may prove to be a dangerous influence.

A pair of swindlers employed a network of men resembling police officers—duplicates, essentially—to strong-arm money from prominent figures in Honolulu's business community.

Returning to Hawaii, Wo Fat sets out to arrange the assassination of a Chinese diplomat he considers a naive advocate for peace.

The Five-O had a puzzle on their hands: the ritual suicide of a Japanese banker, a case demanding both understanding and investigation. Beneath the surface of this peculiar death lay the promise of a more conventional crime, a true criminal…

A killing in Honolulu has revealed an unsettling connection to a human fossil, illicitly removed from China during the Second World War. The link remains obscure, yet hints at a shadowed history now resurfacing with deadly consequence.

The murder investigation veered off course when crucial computer data was tampered with, forcing the police department to deploy cutting-edge technology in a desperate attempt to salvage the case.

Driven by desperation, three women resort to robbing tourist buses, seeking a swift path to financial relief.

The arrest of a young boy, implicated as a witness in a murder case, forces McGarrett to navigate the sharp intellect and relentless determination of a deputy public prosecutor.

The promise of a million dollars for the recovery of five figurines ignited a chain of violence and larceny, ultimately drawing the pursuit across the ocean to the shores of Hawaii.

The death of a physician at the hands of a man suffering psychosis presents the police with a perplexing case. To locate the perpetrator, detectives must decipher the cryptic clues hidden within a partially completed painting.

A complex network of sea and air routes, meticulously crafted for heroin smuggling, remained hidden from view until a member of the operation sought to betray it for a dose of the drug.

The threat of escalating violence hangs heavy as McGarrett races against time to avert a full-blown mob war. His investigation hinges on identifying an elusive assassin and uncovering the identity of his intended victim.

A former Army officer, fractured by his past, opened fire on a police officer, subsequently taking a young girl captive. Captain Buchannon and McGarrett found themselves at odds regarding the most effective course of action for her rescue.

The Saturday Night Special, a firearm, circulated among people, bringing trouble for the police and sorrow to others.

Working with an air traffic investigator, Five-O strives to dismantle a network of illicit ticket sales that has already claimed numerous lives.