1The Sleeper
After a government agent is murdered, McGarrett must identify the traitor in a scientific facility.
2Horoscope For Murder
When an astrologer visits McGarrett to inform him of a murderer with a terrible temper, his antagonism lessens when her assumptions seem to be partly true.
3Deadly Courier
An assassin who doesn't know he's an assassin? Sounds like a punch line from "The Naked Gun," but it's the story of this episode, where a diplomatic courier with a briefcase chained to his wrist is hypnotized and programmed to rig the case with a bomb. When Danno goes undercover to ferret out the assassination ring, he himself is brainwashed and programmed to kill McGarrett.
4The Case Against Philip Christie
McGarrett is the lone hold-out in a trial where the guilt of the accused seems certain.
5Small Potatoes
Steve is framed on the orders of a gambling syndicate, and becomes involved with a woman who is part of the case.
6A Distant Thunder
Five-O must deal with the plans of a Neo Nazi organisation to kill Bobby Tamara, the ""Hawaiian Kennedy"".
7Death Mask
When a street robber claims that he stole King Tutankhamun's mask for fun, McGarrett suspects there is more to the case than simple robbery.
8The Pagoda Factor
McGarrett assists a convict in his escape, so that he can go back to his gang and provide Five-O with inside information.
9A Long Time Ago
Danno is surprised when he bumps into a former flame and even more concerned when she seems to be involved in criminal activities.
10Why Won't Linda Die?
The death of a prominent politician reveals a strange love triangle.
11The Miracle Man
When a preacher is attacked by a man convinced that he is responsible for his wife's death, Five-O investigate more closely and discover some less than godly motives.
12Number One With A Bullet (1)
Two rival mobs attempt to take control of the disco scene in Honolulu.
13Number One With A Bullet (2)
The rival gangs are on the brink of all out war, and Five-O must struggle to stop them.
14The Meighan Conspiracy
When a robbed bank vault shows no signs of break-in, an inside job seems the likely solution. McGarrett's trail of clues leads him back to the builder of the vault and his wife...
15The Spirit Is Willie
Millicent Shand returns and claims that her niece's husband has faked his own death in order to get his hands on $500,000.
16The Bark And The Bite
A vacationing heiress seems unconcerned when McGarrett warns her that someone is after her ruby.
17Stringer
When a photographer takes a picture of a politician making a deal with an underworld figure, he tries blackmail. However, he is not prepared for the ruthless nature of the mobsters.
18The Execution File
A private detective is rescuing girls from prostitution, and using the opportunity to kill the pimps as well.
19A Very Personal Matter
When the son of one of Steve's friends dies of an overdose, he goes after a doctor that he suspects of over-prescribing drugs.
20The Skyline Killer
The hunt for a high-rise killer is made more difficult for Five-O when a journalist offers to share his profits in exchange for the killer's story.
21The Year Of The Horse (1)
When a woman dies due to heroin packets bursting inside her and the Governor is implicated, McGarrett and Danno head off to Singapore to discover a smuggling operation.
22The Year Of The Horse (2)
Five-O must close the heroin smuggling operation to exonerate the Governor and catch the figures behind the scheme.