A newspaper reporter gets a tip about an out of this world story: a man who claims to be a Martian.
Print Asper is suspected of attempted murder when he forces a crooked lawyer, at gunpoint, to return the ranch he stole from him, and the lawyer still ends up getting shot later by someone.
The governor of California is attacked during a visit to Los Angeles with his daughter and aide, and barely escapes with his life. Taken to the de la Vega house to recover, he is much too weak to travel for several days. The aide, Capitan Arrellanos, tells Diego he suspects the attack to be the work of the Rebatos, a group that wants to sever ties with the government in Spain.
Although a drought has forced local cowhands to seek work on a railroad construction project, railraod executives are afraid that their workers will desert them if they believe an old man's claim to have found a way to make rain.
A prominent lawyer appears able to manipulate any situation successfully - except, perhaps, for his marriage.
Gunman Kin Creed arrives in Dodge determined to enhance his reputation by outdrawing Matt in a gunfight. He goes to great lengths to force Matt into a confrontation and is able to wound him, but it proves to be a pyrrhic victory.
Sergeant Garcia returns from escorting Padre Simeon on a trip from San Diego and is surprised to find that almost everyone in Los Angeles has contracted the measles. The doctor has placed the entire pueblo under quarantine and restricted residents to their homes. Even the soldiers cannot leave the cuartel.
While on patrol during WWII, a German U-boat attempts to evade detection from the sonar of the American and British ships. But their location is repeatedly betrayed by the noise of a rhythmic banging sound caused by someone . . . or something . . . on board the submarine.
When his employer begins to suspect him of embezzlement, bookkeeper Asa Manning decides to hire a professional gunman to take care of the problem.
When he loses all his money in a poker game, a man tells his pregnant wife an involved lie to explain the missing cash.
Matt tries to help Andy Hill, a young gunman who is apparently trying very hard to go straight, by getting him a job riding shotgun on the stagecoach.
Pedro Avila, recently arrived in the pueblo, earns a meager living by betting other men that he can beat them in a sword fight. He tries to talk Diego into betting, but Diego refuse, as Diego knows he must keep his skill a secret. This gives Avila and his friend Tony Pineda an idea about how to get rich. They plan to force Diego into a duel, then allow the frightened man to buy his way out of the situation.
An unfounded rumor causes North Fork's outspoken feminist schoolteacher to be attacked by a mob of angry townspeople.
A retired Scotland Yard inspector goes to extreme lengths to prove the guilt of a suspect in an old murder case.
Marshal Dillon has to stop a ruthless, cold-blooded, greedy, buffalo hunter who is in the habit of brutally killing his hired help to avoid paying them their wages.
Humiliated by Zorro, Basilio gets his revenge by arresting Sergeant Garcia and hoisting him in the air in the public square outside the cuartel. A large sign dares Zorro to rescue Garcia, but Diego knows Basilio will have hidden lancers throughout the area. When night arrives, so does Zorro, using Bernardo to help create a diversion that draws the soldiers out of town.
The McCains try to be tolerant of their embittered neighbor Abel MacDonald, who tels Lucas to keep off his land and won't allow his son to become friends with Mark, but they decide he's gone too far when he won't allow his injured boy to get medical treatment.