• Air date: 14 Sep '71 24 episodes
      The fourth season of Hawaii Five-O, an American television series, began September 14, 1971, and ended on March 7, 1972. It aired on CBS. The region 1 DVD was released on June 10, 2008.
  • List of Episodes (24)
    • 1. Highest Castle, Deepest Grave

      14 Sep '71
      A ten year old case is reopened when an archaeological dig unearths the skeletons of two murder victims.
    • 2. No Bottles... No Cans... No People

      21 Sep '71
      Gangster Johnny Oporta arranges for his enemies to be murdered and then covers up his crimes by incinerating their bodies. McGarrett and the others must stop this murderous spree.
    • 3. Wednesday, Ladies Free

      28 Sep '71
      Vic Tanaka is murdering women and painting their faces to resemble a prostitute he once knew, who is now happily married. McGarrett and his team must find the killer before he does any more damage.
    • 4. 3,000 Crooked Miles To Honolulu

      05 Oct '71
      Five-O is up against a sophisticated gang who have come to Hawaii to cash $750,000 of traveller's cheques.
    • 5. Two Doves And Mr. Heron

      12 Oct '71
      A hippie robs an embezzler of the key to a locker containing $250,000. Meanwhile, Danno is trying to contact the daughter of his Berkeley University landlady, who happens to be the hippie's girlfriend…
    • 6. ...And I Want Some Candy And A Gun That Shoots

      19 Oct '71
      Young Vietnam veteran and marksman Billy Shem Jr. buys a rifle under false pretences and proceeds to a bunker at Diamond Head. He then takes pot shots at the people on the road and then the police who arrive. McGarrett must neutralise the threat he poses by any means possible.
    • 7. Air Cargo -- Dial For Murder

      26 Oct '71
      While investigating the death of a security agent at an airport, McGarrett comes into contact with a gang who hijack cargo.
    • 8. For A Million... Why Not?

      02 Nov '71
      Five seemingly good citizens with different motives band together to steal $6,000,000 while McGarrett is away on Maui at a trial.
    • 9. The Burning Ice

      09 Nov '71
      McGarrett finds holes in a convict's story and a husband becomes a suspect in the murder of his wife.
    • 10. Rest In Peace, Somebody

      16 Nov '71
      A policeman who was kicked off the force blames McGarrett and Five-O and plans to kill the Governor.
    • 11. A Matter Of Mutual Concern

      23 Nov '71
      McGarrett must deal with the conflicts between four gangs of differing ethnic background, and try to uncover illegal activities.
    • 12. Nine, Ten -- You're Dead

      30 Nov '71
      A mob boss seeks revenge on a former boxer who smashed the hand of a novice to prevent him from ending up ruining his life in the boxing ring.
    • 13. Is This Any Way To Run A Paradise?

      21 Dec '71
      McGarrett and the team must find out who is behind a series of ecological stunts, when it is feared that a company executive will be their next target.
    • 14. Odd Man In

      28 Dec '71
      A veteran criminal who has already had dealings with Five-O escapes, and plans to steal millions of dollars from drug smugglers.
    • 15. Bait Once, Bait Twice

      04 Jan '72
      A woman attempts suicide in order to get her boyfriend to come out into the open and expose himself to an assassination attempt.
    • 16. The Ninety-Second War (1)

      11 Jan '72
      McGarrett is framed in an elaborate set up by Wo Fat, and has to contend with a foreign double amongst other problems.
    • 17. The Ninety-Second War (2)

      18 Jan '72
      Several faces from the past reappear as McGarrett must stop Wo Fat from carrying out his plan, a ninety second attack on a missile tracking base.
    • 18. Skinhead

      25 Jan '72
      When a young woman is beaten and raped and a soldier is arrested for the crime, McGarrett begins to have doubts about his guilt.
    • 19. While You're At It, Bring In The Moon

      01 Feb '72
      An eccentric billionaire is accused of murdering a business associate, but will not leave his boat to defend himself against the accusations, allowing his associates to declare him mentally incompetent.
    • 20. Cloth Of Gold

      08 Feb '72
      Three real estate crooks die horrible and mysterious shellfish related deaths, and McGarrett and the others must establish the link between them, and who has reason to want them dead.
    • 21. Good Night, Baby - Time To Die!

      15 Feb '72
      McGarrett sets up a cordon of police around a young woman to capture her boyfriend who has escaped from jail, but all is not as it seems…
    • 22. Didn't We Meet At A Murder?

      22 Feb '72
      A young widow becomes part of a blackmail plot involving the murder of a Chicago mobster.
    • 23. Follow The White Brick Road

      29 Feb '72
      Danno goes undercover onboard a Navy ship to try and uncover how sailors are smuggling heroin onto the islands.
    • 24. R&R -- &R

      07 Mar '72
      A psychotic man named Ralston is killing the wives of members of his army unit, and Five-O, including Kono on his last case, must stop him before he commits any more crazed attacks.