Dr. Loveless plans to rule by capturing an arsenal and a sub-treasury.

West and Gordon get involved with a Croatian king and a werewolf type who plots to control the king's country.

A master criminal decides to implant a device in President Grant's brain that will make him respond to the criminal's orders.

The assassination of a naval intelligence officer and the sinking of a frigate leads the agents to a Hawaiian expatriate who plans to kill King Kalakua and take control of the islands.

West and Gordon fear an attempt on President Grant's life while they are escorting him to a conference.

A series of mysterious robberies occur and the agents discover that the common denominator is that a wealthy rancher donated paintings to each location.

West and Gordon investigate the murder of a scientist who was studying a rash of destructive tidal waves.

A newspaper contains a prediction that a magician will die in front of West and Gordon.

West and Gordon encounter a society lady who plans to change the United States into a monarchy and reign as its queen.

Gordon and West switch a prisoner in Vladivostok, without leaving the United States; guest John Astin.

Gordon and West guard the Sultan of Ramapur and the sacred white elephant he brings as a gift to President Grant.

Jim and Artie once again square off against Count Manzeppi. This time, Manzeppi is looking for a toy chicken that holds the secret of converting base metal to gold.

Gordon and West guard a member of a tontine, an investment group in which the surviving member inherits all.

Gordon and West confront a former Confederate colonel who controls the fourth dimension; guest Ricardo Montalban.

Gordon and West investigate threats on the life of a federal judge (Ed Begley).

A kangaroo court tries West for Gordon's murder; guest Donald Woods.

Gordon has a vivid nightmare about the ghost of a prisoner's mother, who attempts to clear her son's name.

West and Gordon fail to save the life of a highly unpopular Latin American dictator they have been assigned to guard.

Dr. Loveless drives Indians into poverty so he can become their benefactor and deity.

West is kidnapped by a madman who plans to create an underwater kingdom that will control shipping lanes.

Gordon and West must free an agent imprisoned on Devil's Island.

West and Gordon visit a town named Justice during Law and Order Week and find it the site for a convention of criminals.

A bizarre extortion plot involves green men from Venus who need gold for spaceship fuel.

Gordon and West ask help from a man who controls animals with his mind.

A mad scientist creates a bomb-carrying robot identical to West and orders it to kill members of the president's cabinet.

Dr. Loveless abducts an Indian Princess in the hopes that he can create a war between Indians and whites. When Jim and Artie go to investigate, they find Loveless waiting... with a powder that can shrink anyone down to 6 inches tall.

A self-styled maharajah (Boris Karloff) holds West captive in his palace.

An agent's murder leads West and Gordon to a plot to assassinate Mexico's president.