Season 4

October 12, 1969

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.

October 19, 1969

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.

October 26, 1969

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.

November 2, 1969

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.

November 16, 1969

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.

November 23, 1969

As Barney Collier 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.

November 30, 1969

A country is unaware that its premier is dead and that a double is about to appoint a successor. So Barney Collier concocts a mechanical man to take his place.

December 7, 1969

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.

December 14, 1969

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.

December 21, 1969

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.

December 28, 1969

Jim Phelps poses as an amnesia victim in order to retrieve a stolen isotope, one that could make nuclear weapons affordable to any country.

January 4, 1970

Paris masquerades as Zastro, a magician who has come to entertain during an arranged wedding between the king's sister and a ruthless usurper.

January 11, 1970

With the king's sister rescued during the wedding, the team now turns its attention to the true heir, who's locked up in prison.

January 18, 1970

Just as Jim Phelps and the others unwittingly become caught up in a royal power struggle, a bomb goes off, seriously injuring Paris and revealing his disguise.

January 25, 1970

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.

February 1, 1970

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.

February 8, 1970

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.

February 15, 1970

Jim and his team must infiltrate a prison in order to block the release of a ruthless Middle Eastern terrorist about to be pardoned.

February 22, 1970

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.

March 1, 1970

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.

March 8, 1970

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.

March 15, 1970

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.

March 22, 1970

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.

March 29, 1970

As a duplicitous dictator courts the young people of his country, Paris poses as the son of his predecessor, a martyred youth leader.