The sixth season of Hawaii Five-O premiered on September 11, 1973 and ended February 26, 1974. 24 episodes aired during this season. The Region 1 DVD was released on April 21, 2009. Creator and executive producer Leonard Freeman died during this season.
September 18, 1973
Murders are being committed seemingly at random every six weeks, and McGarrett is at a loss to understand the motives for these crimes. However, a newspaper may hold the answer.
Episode 3
Charter For Death
September 25, 1973
When a large amount of diseased rats are found on a boat with all the crew dead, Five-O must contend with an outbreak of bubonic plague.
Episode 4
One Big Happy Family
October 2, 1973
A family of white-trash mass killers arrive on Hawaii after wreaking a trail of devastation on the mainland, and McGarrett must catch them before they can do more damage on the islands.
Episode 5
The Sunday Torch
October 9, 1973
Buildings are being set on fire on Sundays, and a known firebug is the top suspect. However, McGarrett begins to think that others may be responsible.
Episode 6
Murder Is A Taxing Affair
October 16, 1973
A corrupt federal agent who is tracking a man under indictment for tax evasion kills him for the $600,000 he is carrying, and then loses the money.
Episode 7
Tricks Are Not Treats
October 23, 1973
The killing of an important pimp threatens an all out war between two competing vice empires.
Episode 8
Why Wait Till Uncle Kevin Dies?
October 30, 1973
A string of five murders of wealthy men leads McGarrett to a crooked inheritance scheme.
Episode 9
Flash Of Color, Flash Of Death
November 6, 1973
A glamorous woman sets up an opal smuggler so her accomplices can rob both the smuggler and a jewellery store at the same time.
Episode 10
A Bullet For El Diablo
November 13, 1973
A dictator must evade a female assassin sent to kill him, one that looks just like his own daughter.
Episode 11
The Finishing Touch
November 20, 1973
McGarrett brings in a document expert to help him crack a case involving forged government securities, but he soon becomes suspicious of the expert as well.
Episode 12
Anybody Can Build A Bomb
November 27, 1973
A nuclear scientist becomes involved in an extortion plot when a gang threaten to explode a small nuclear weapon somewhere in Honolulu.
Episode 13
Try To Die On Time
December 4, 1973
Harry Foxton, a gambler, is himself the subject of huge bets over what hour he will die. McGarrett must work out the gambler's complex relationships to get to the bottom of this case.
Episode 14
The $100,000 Nickel
December 11, 1973
A thief known for using sleight-of-hand is hired to steal a valuable nickel, but the coin ends up on a journey across many miles and through many hands.
Episode 15
The Flip Side Is Death
December 18, 1973
A mock military emergency leaves a bank open for a robbery, and Five-O must travel to the opposite side of Oahu to find out more in their investigation.
Episode 16
The Banzai Pipeline
January 1, 1974
An exciting surf beach is the location for a filming session, where a man catches a killer on camera.
Episode 17
One Born Every Minute
January 8, 1974
A pair of crooks team up with local criminals and use phony diamonds as bait to prey on wealthy male tourists. McGarrett and Five-O must shut off this sinister racket.
Episode 18
Secret Witness
January 15, 1974
A young man witnesses a murder, and finds himself and his family are now the killer's targets.
Episode 19
Death With Father
January 22, 1974
The son of a Federal Narcotics officer becomes involved in a heroin refining operation.
Episode 20
Murder With A Golden Touch
January 29, 1974
When a man is found dead with gold dust on him, McGarrett and his team must investigate where the stolen gold came from and how it is being bought onto the market.
Episode 21
Nightmare In Blue
February 5, 1974
A series of rapes and murders occur, and the main suspect seems to be a police officer...
Episode 22
Mother's Deadly Helper
February 12, 1974
A right-wing crackpot, Cord McKenzie, metes out 'justice' to people who have been found innocent on technicalities or released early. He thinks he is helping the police, but McGarrett thinks otherwise.
Episode 23
Killer At Sea
February 19, 1974
While investigating a robbery and kidnapping, the trail of clues leads McGarrett and the team to an ocean liner with a deadly passenger.
Episode 24
30,000 Rooms And I Have The Key
February 26, 1974
An aging jewel thief steals from rooms at Waikiki hotels, and taunts Five-O by leaving a trail of clues behind.
