Rescuing a governor's daughter from stagecoach robbers exposes West to plague; guest Lana Wood.
A plot threatens the directors of a corporation owned by a woman; guest Jo Van Fleet.
A Russian prince races a desperate foe to recover a religious icon; guest Nina Foch.
West visits an eerie island to get a diamond for the National Museum; guest Beverly Garland.
A temperamental diva (Patrice Munsel) is kidnapped at a New Orleans performance.
Gordon and West head to a lonely outpost to battle a terrorist gang.
A melody holds the clue West needs to trap a departmental traitor; guest Jack Carter.
A dying man asks West to preserve a legacy for his young ward.
West's bizarre behavior indicates he is under Raven's control.
West vows to destroy Raven, an organization that uses mind conditioning on influential people to commit sabotage.
Gordon and West pursue a mysterious outlaw band terrorizing New Mexican towns.
A madman plans to control San Francisco harbor by launching rockets from Alcatraz; guest Khigh Dhiegh.
Dr. Loveless returns with a scheme to commit wholesale homicide; guest Charles Aidman.
A scientist (Harold Gould) employs a gigantic tuning fork in an extortion scheme.
A meek agent (Pat Paulsen) becomes a big help in dealing with an opium ring.
Gordon and West must intercept a fortune raised to revive the Confederacy; guest Dabbs Greer.
Gordon and West search for an Egyptian princess's ruby; guest Tom Troupe.
A town's residents hunt for Gordon and West in order to free the agents' prisoner.
Gordon and West seek a sea creature terrorizing Portuguese fishermen; guest Ford Rainey.
Gordon and West invade an eccentric's (William Schallert) mansion to find a deadly germ culture.
A physician (Jay Robinson) injects a rich family with a drug that causes rapid aging.
A man uses a steam-driven device to drive homesteaders off oil-rich land; guest Floyd Patterson.
A former Army general (Kevin McCarthy) tries to steal an explosives formula.
A foreign diplomat tries to implicate the United States in a conspiracy; guest Harvey Korman.
A would-be dictator tries to kill President Grant; guest Wendell Corey.
Gordon and West probe a mystery protected by a senator and his sons; guest John Abbott.
West guards a cargo of smallpox vaccine, until a blow on the head causes amnesia; guest Kevin Hagen.
West and Gordon encounter voodoo rites and a diabolical biologist and his throng of robot-like slaves.
A murderer (Milton Seltzer), escaped from prison, plans revenge on West.
Former inmates of a Civil War prison camp seek revenge on the commandant; guest Jeff Corey.
Gordon and West pursue weirdly dressed and heavily armed bank robbers.
West and Gordon work to avert the destruction of the American cotton industry by boll weevils smuggled in from abroad.
A general (Robert Wilke) plans to use his reputation as an Indian fighter to become president.
Gordon and West join itinerant entertainers while searching for a hired killer; guest Jason Evers.
Gordon and West must return a Bosnian count (Mark Lenard) to his country for trial.
An art collector (John McGiver) plans to turn West against his colleagues.
Gordon and West must stop a territorial governor who rules like a dictator; guest Kent Smith.
A sheriff (Jackie Coogan) asks West and Gordon to save his town from cutthroats.
A giant cannon that has destroyed one town is aimed at Denver; guest Robert Duvall.
Gordon and West pursue counterfeiters; guest Florence Sundstrom.
Bogus archaeologists try to steal the famed treasure of Montezuma; guest Jack Elam.
Fires and explosions hamper an investigation of a rancher's murder; guest John Pickard.
The honor of the U.S. government rests on recovering a Japanese sword; guest Paul Stevens.
The search for a stallion leads West and Gordon to bandits and revolutionaries; guest Frank Silvera.
Gordon and West think they have found Dr. Loveless' corpse, then meet a man claiming to be his uncle.
Gordon and West interfere with assassins stalking the president of Mexico.
West is ordered to block a Canadian revolutionary's scheme to use violence to establish a personal empire.
A man steals the Constitution to bargain for control of border territory; guest Madlyn Rhue.
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.
Gordon and West attend a meeting of Navy officers, who subsequently are slain; guest Nehemiah Persoff.
West and Gordon fear an attempt on President Grant's life while they are escorting him to a conference.
West and Gordon tangle with Dr. Loveless, who has another king-size plan to achieve world conquest.
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.
Gordon and West face Count Manzeppi (Victor Buono), who has mastered alchemy.
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 Montalbán.
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; guests Peter Lawford, Sammy Davis Jr.
A mad scientist creates a bomb-carrying robot identical to West and orders it to kill members of the president's cabinet.
West and Gordon face Dr. Loveless who shrinks West to six inches in height to aid his plans of ruling a world of little people.
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; guest Victor Buono.
Gordon and West pursue looters who are using a bacteria culture to paralyze people.
Dr. Loveless gives West a new hallucinogen that turns users into murderers.
Diamond thefts lead West to a man whose formula for melted gems makes him invisible.
West and Gordon are assigned to investigate an outlaw army being recruited for the conquest of Mexico's Baja California.
West suspects the deaths of several scientists are linked to a woman they all loved; guest Don Rickles.
A South Sea island prince insists on visiting an exclusive health resort where assassins wait to kill him.
West may be the first victim of the electric chair when he pursues a warden who uses inmates to commit crimes.
A sculptor (Lloyd Bochner) who fled a death sentence stalks a justice on the Supreme Court.
Loveless plans to make California a children's haven by extorting cash from millionaires.
West and Gordon must protect a visiting despot from assassination despite his disregard for his own safety.
West sets out to stop a megalomaniac descendant of John Brown who is determined to take over the United States.
West and Gordon probe a smuggling operation and find themselves involved in a struggle for a Chinese province.
West meets his match in physical prowess in an embittered Army officer whose injured body has been repaired with steel.
Gordon poses as a prospector to pave the way for West's impersonation of a gold thief.
A doctor is hired to brainwash West and to program him to kill an influential, peaceful American Indian.
West and Gordon go after an obsessed museum curator who wants to use the state treasury to buy artwork.
West and Gordon encounter a mad scientist who plans to take over the state of Wyoming by using man-made earthquakes.
The demented leader of a fanatical army plans to overthrow the U.S. Army divisions stationed in the Southwest.
Dr. Loveless creates a double of West and infiltrates the Secret Service to retrieve a formula.
West discovers that an ex-general with grandiose plans is really behind murders allegedly committed by Indians.
West and Gordon discover the Albanian princess in their care is an impostor.
The disappearance of a mysterious substance from a French consulate is linked to Prussia.
A beautiful girl upsets West's efforts to quell the piracy of riverboats plying the lower Mississippi River.
Gordon and West pose as itinerant Shakespearean actors to infiltrate a corrupt politician's army.
West and Gordon take on a band of counterfeiters who have robbed the mint of plates used to print money.
Dr. Loveless (Michael Dunn) turns to murder and blackmail to get a rival's explosives formula; guest Leslie Parrish.
A criminal planning to take over Mexico leads West and Gordon to a tiny village with an underground secret.
President Grant sends West and Gordon to stop a Mexican revolutionary; guests Suzanne Pleshette, Victor Buono.