An arms dealer concocts a plan to supply American arms captured in Vietnam to guerrilla groups in Africa and the Middle East.

The whereabouts of a list of enemy agents operating in the United States is locked in the memory of a captured spy, Col. Vanin, and no one, including the spy, can penetrate his mind.

A deceased defector's body must be recovered since it contains the only sample of a deadly nerve gas.

The IMF is called upon to free John Darcy, the leader of a liberation movement in West Africa, and end the tyrannical rule of his captor, Colonel Alex Kohler, a ruthless segregationist.

With the threat of another off-shore missile crisis and perhaps a confrontation that could lead to war, the IMF is called upon to expose a nuclear arms treaty secretly signed by a previously friendly country and a hostile power.

The IMF team infiltrates a revolutionary group which commits robberies to finance plans to overthrow the American government.

The IMF is assigned to destroy a satellite containing thermonuclear bombs that have been launched by a hostile power as a means for international blackmail.

The team's efforts to palm off a fake guidance system on an enemy agent are threatened when a psychotic killer abducts Dana.

An underworld leader with links to a police precinct chief is the object of Barney's brother's newspaper crusade.

A political boss hires a professional provocateur to stage a violent protest, in a maneuver to discredit his state's governor and elevate his puppet, the mayor, to the governorship.

Paris, still in his cover from a completed mission, is kidnapped and held hostage by a group of treacherous revolutionists.

A leading illegal supplier of heroin is dying of cancer and is about to designate a successor and turn over to him the only known list containing all the vital information about the entire drug operation.

Phelps poses as an archeology professor and Dana as one of his graduate students, as the IMF goes to the aid of a group of young guerilla fighters in an effort to obtain from them a notebook containing vital scientific information.

While rescuing an imprisoned patriot, Barney is critically wounded and must be left behind in order for the IMF to complete their mission.

Before the IMF can get the prototype of an Iron Curtain country's secret weapon to the United States, part of the weapon falls into the hands of an unscrupulous, greedy nightclub owner.

Phelps falls in love with a woman that the IMF have been assigned to bring out of an iron curtain country over the seemingly insurmountable obstacles set in their way by the country's secret police.

Dana places her life in danger as the IMF tries to prove an American businessman innocent of the murder of his Japanese wife.

Paris is caught by enemy agents who had recognized as an IMF team member. The operatives implant a device in Paris' brain to control him and force him to get rid of Jim.

A rebellious Caribbean government official plans to take over his country by having his president assassinated while in the United States to speak before a joint session of Congress.

Phelps returns to his hometown on personal business, only to find his once happy surroundings in a state of panic caused by a mysterious series of deaths of the young townswomen. 

The IMF enlists a non-cooperative young computer genius who has "dropped-out" of society, but is desperately needed by the IMF to complete their assignment.

 Dana and Paris infiltrate an international drug ring headed by a ruthless man.

The IMF goes after a hitman who never misses... and does everything randomly, making him impossible to anticipate.