E1 - Hookman

Aired: September 11, 1973

A amputee with no hands sets out to kill every police officer who contributed to his injury, and that includes Steve McGarrett.

E2 - Draw Me A Killer

Aired: 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.

E3 - Charter For Death

Aired: 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.

E4 - One Big Happy Family

Aired: October 02, 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.

E5 - The Sunday Torch

Aired: October 09, 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.

E6 - Murder Is A Taxing Affair

Aired: 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.

E7 - Tricks Are Not Treats

Aired: October 23, 1973

The killing of an important pimp threatens an all out war between two competing vice empires.

E8 - Why Wait Till Uncle Kevin Dies?

Aired: October 30, 1973

A string of five murders of wealthy men leads McGarrett to a crooked inheritance scheme.

E9 - Flash Of Color, Flash Of Death

Aired: November 06, 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.

E10 - A Bullet For El Diablo

Aired: November 13, 1973

A dictator must evade a female assassin sent to kill him, one that looks just like his own daughter.

E11 - The Finishing Touch

Aired: 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.

E12 - Anybody Can Build A Bomb

Aired: 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.

E13 - Try To Die On Time

Aired: December 04, 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.

E14 - The $100,000 Nickel

Aired: 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.

E15 - The Flip Side Is Death

Aired: 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.

E16 - The Banzai Pipeline

Aired: January 01, 1974

An exciting surf beach is the location for a filming session, where a man catches a killer on camera.

E17 - One Born Every Minute

Aired: January 08, 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.

E18 - Secret Witness

Aired: January 15, 1974

A young man witnesses a murder, and finds himself and his family are now the killer's targets.

E19 - Death With Father

Aired: January 22, 1974

The son of a Federal Narcotics officer becomes involved in a heroin refining operation.

E20 - Murder With A Golden Touch

Aired: 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.

E21 - Nightmare In Blue

Aired: February 05, 1974

A series of rapes and murders occur, and the main suspect seems to be a police officer...

E22 - Mother's Deadly Helper

Aired: 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.

E23 - Killer At Sea

Aired: 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.

E24 - 30,000 Rooms And I Have The Key

Aired: February 26, 1974

An aging jewel thief steals from rooms at Waikiki hotels, and taunts Five-O by leaving a trail of clues behind.