• Air date: 28 Sep '69 26 episodes
      The fourth season of the original Mission: Impossible originally aired Sundays at 10:00-11:00 pm on CBS from September 28, 1969 to March 29, 1970.
  • List of Episodes (26)
    • 1. The Code

      28 Sep '69
      In order to stop an invasion and shatter an alliance between two countries, the IMF team must photograph and break a code in a matter of minutes.
    • 2. The Numbers Game (aka: The Key)

      05 Oct '69
      The team tries to get a deposed dictator to divulge his Swiss bank account number by tricking him into believing World War III is about to begin.
    • 3. The Controllers (1)

      12 Oct '69
      Jim and a female agent pose as scientists who have invented a new drug in order to replace a real drug that turns people into willing slaves.
    • 4. The Controllers (2)

      19 Oct '69
      As Barney taints the water system with a mind-numbing drug, Jim is captured and put on trial, where he must discredit an enemy scientist.
    • 5. Fool's Gold

      26 Oct '69
      Paris poses as a counterfeiter in order to gain access to a safe and destroy millions in phony money, as well as the plates used to make it.
    • 6. Commandante

      02 Nov '69
      An imprisoned priest is about to be executed, so Jim and Willie pose as U.S. religious workers who are willing to trade guns in exchange for his safety.
    • 7. Mastermind

      23 Nov '69
      An art lover is made to believe he can own a priceless work of art, but it is really a plot to retrieve a valuable formula from his impenetrable safe.
    • 8. Robot

      30 Nov '69
      Upon his release, a prisoner plans to fund neo-Nazis with stolen money. So a submarine voyage is simulated in order to transport him to his contact.
    • 9. The Double Circle

      07 Dec '69
      A country is unaware that its premier is dead and that his double is about to appoint a successor. So Barney concocts a mechanical man to take his place.
    • 10. The Brothers

      14 Dec '69
      As Barney attempts to break into a safe that contains an incriminating file, Paris convinces a mob figure that he can read the mind of his double-crossing boss.
    • 11. Time Bomb

      21 Dec '69
      A Middle Eastern king needs to be restored to the throne. So a medical operation is replicated where he will seemingly donate his kidney to his murderous brother.
    • 12. The Amnesiac

      28 Dec '69
      The IMF team has to try and gain access to a nuclear reactor complex, where a terminally ill officer plans to detonate an atomic bomb.
    • 13. The Falcon (1)

      04 Jan '70
      Jim poses as an amnesia victim in order to retrieve a stolen isotope, one that could make nuclear weapons affordable to any country.
    • 14. The Falcon (2)

      11 Jan '70
      Paris masquerades as Zastro, a magician who has come to entertain during an arranged wedding between the king's sister and a ruthless usurper.
    • 15. The Falcon (3)

      18 Jan '70
      With the king's sister rescued during the wedding, the team must now turn its attention to the true heir, who's locked up in prison.
    • 16. Submarine

      16 Jan '70
      Just as Jim and the others unwittingly become caught up in a royal power struggle, a bomb goes off, seriously injuring Paris and revealing his disquise.
    • 17. Chico

      25 Jan '70
      Two halves of a microfilm add up to one dangerous list for the agents it will incriminate. But Barney plans to use a trained dog to retrieve it.
    • 18. Gitano (aka Toys)

      01 Feb '70
      A 12-year-old king whose life is in danger is rescued by gypsies - Paris and Willie in disguise - and forced to dress up like a girl to fool his assassins.
    • 19. Phantoms

      08 Feb '70
      A murderous dictator's belief in ghosts is used against him when Barney fashions a clever system that projects spirits of his dead victims before his eyes.
    • 20. Terror

      15 Feb '70
      Jim and his team must infiltrate a prison in order to block the release of a ruthless Middle Eastern terrorist about to be pardoned.
    • 21. Lover's Knot

      22 Feb '70
      While in London to break a spy ring, Paris develops feelings for the beautiful Lady Weston after he is cast as a jealous lover in a romantic triangle.
    • 22. Orpheus

      01 Mar '70
      An unknown assassin must be stopped, so Barney infiltrates the foreign agency that employs him while Jim poses as a drug addict with information to sell.
    • 23. The Crane

      08 Mar '70
      Jim and his team rescue a prisoner and place him in a spot his captors will never think to look - a conspicuous location right under their noses.
    • 24. Death Squad

      15 Mar '70
      Barney kills a man in self-defense and is marked for execution by the victim's brother, a chief of police who heads a death squad.
    • 25. The Choice

      22 Mar '70
      A duchess is under the powerful spell of a mystic, who notices his uncanny resemblance to Paris and plans to use him in a plot to ascend to the throne.