The fifth season of the original Mission: Impossible originally aired Saturdays at 7:30-8:30 pm from September 19, 1970 to March 6, 1971. "The Merchant" originally aired Wednesday, March 17, 1971 at 7:30-8:30 pm.

Season 4 Episode 1 - The Code

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. Air Date : 28th-Sep-1969  Read More

Season 4 Episode 2 - The Numbers Game (aka: The Key)

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. Air Date : 5th-Oct-1969  Read More

Season 4 Episode 3 - The Controllers (1)

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. Air Date : 12th-Oct-1969  Read More

Season 4 Episode 4 - The Controllers (2)

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. Air Date : 19th-Oct-1969  Read More

Season 4 Episode 5 - Fool's Gold

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. Air Date : 26th-Oct-1969  Read More

Season 4 Episode 6 - Commandante

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. Air Date : 2nd-Nov-1969  Read More

Season 4 Episode 7 - Submarine

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. Air Date : 16th-Nov-1969  Read More

Season 4 Episode 8 - Mastermind

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. Air Date : 23rd-Nov-1969  Read More

Season 4 Episode 9 - Robot

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. Air Date : 30th-Nov-1969  Read More

Season 4 Episode 10 - The Double Circle

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. Air Date : 7th-Dec-1969  Read More

Season 4 Episode 11 - The Brothers

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. Air Date : 14th-Dec-1969  Read More

Season 4 Episode 12 - Time Bomb

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. Air Date : 21st-Dec-1969  Read More

Season 4 Episode 13 - The Amnesiac

Jim Phelps poses as an amnesia victim in order to retrieve a stolen isotope, one that could make nuclear weapons affordable to any country. Air Date : 28th-Dec-1969  Read More

Season 4 Episode 14 - The Falcon (1)

Paris masquerades as Zastro, a magician who has come to entertain during an arranged wedding between the king's sister and a ruthless usurper. Air Date : 4th-Jan-1970  Read More

Season 4 Episode 15 - The Falcon (2)

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. Air Date : 11th-Jan-1970  Read More

Season 4 Episode 16 - The Falcon (3)

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. Air Date : 18th-Jan-1970  Read More

Season 4 Episode 17 - Chico

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. Air Date : 25th-Jan-1970  Read More

Season 4 Episode 18 - Gitano (aka Toys)

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. Air Date : 1st-Feb-1970  Read More

Season 4 Episode 19 - Phantoms

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. Air Date : 8th-Feb-1970  Read More

Season 4 Episode 20 - Terror

Jim and his team must infiltrate a prison in order to block the release of a ruthless Middle Eastern terrorist about to be pardoned. Air Date : 15th-Feb-1970  Read More

Season 4 Episode 21 - Lover's Knot

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. Air Date : 22nd-Feb-1970  Read More

Season 4 Episode 22 - Orpheus

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. Air Date : 1st-Mar-1970  Read More

Season 4 Episode 23 - The Crane

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. Air Date : 8th-Mar-1970  Read More

Season 4 Episode 24 - Death Squad

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. Air Date : 15th-Mar-1970  Read More

Season 4 Episode 25 - The Choice

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. Air Date : 22nd-Mar-1970  Read More

Season 4 Episode 26 - The Martyr

As a duplicitous dictator courts the young people of his country, Paris poses as the son of his predecessor, a martyred youth leader. Air Date : 29th-Mar-1970  Read More