Lucas, Micah and Mark are taken hostage by a gang of bandits.
Lucas is able to break free from the bandits that are holding him hostage just in time to deliver a baby.
The townsmen are in awe when a beautiful woman buys the hotel.
Lucas and a wanted outlaw are quarantined in a hotel together.
A retired gunfighter decides to settle down in North Fork.
An Irishman woos Lou.
Lucas must race to stop an assassination plot.
Mark becomes friends with Marty Blair, a front man for a traveling circus. However, the boy ends up at odds with Lucas when Lucas ends up shooting Marty during a hotel robbery. Marty claims he was an innocent bystander and Mark believes him... pitting father against son.
Legendary Wade Randall, the self-billed "Most Amazing Marksman the West Has Ever Known," arrives in North Fork. Mark idolizes the man... but when he ends up challenged to a gunfight, Lucas has to help him out when he learns Wade is better with his mouth than with a gun.
When a land speculator, Willard Prescott, tries to get Lucas to sell his farmland because the railroad wants to put a line through, Lucas refuses to sell. Prescott calls in some men to convince Lucas to change his mind.
After an accident, Mark becomes afraid of Lucas' gun.
When Micah takes a trip out of town, he leaves blacksmith Nils in charge when Lucas isn't available because it's branding season. However, Nils soon decides to enforce a no-guns policy in North Fork, and some outlaws take advantage of it.
After Lucas misses an easy shot and puts Mark's life at risk, the Rifleman loses confidence in his abilities.
An Indian, John Wing, is wanted for a murder at a railroad camp. Lucas protects John, believing in his innocence, but railway boss Gangling and his men soon capture John and have the authority to put him on trial. Lucas will hang with John if he's found guilty... and Gangling is the killer.
A sign painter is accused of murder.
Mark is threatened by a young boy.
When a Japanese man arrives in North Fork to visit, he is hounded by townspeople.
Lucas is worried when he hears rumors that Mark may be running with a gang of rustlers. He's unaware that two rustlers are using children's Halloween masks to conceal their identities, and renting a gullible Englishman's barn to store the stolen cattle.
Lucas and Mark help Micah transfer a prisoner. However, when a rattlesnake crawls into Lucas' blanket, Mark and Micah have to make a deal with the prisoner, the only one who can save Lucas.
Micah locks Lucas up for his own good when a man who shot Lucas in the back years ago and tried to take his wife arrives in North Fork. Meanwhile, Mark goes hunting for a near-legendary stag but discovers that his prey isn't what he expected.
Lucas finds a bullet and presents it as evidence at a convict's hearing.
Mark's legs are paralyzed following a devastating accident.
Lucas and Mark's new friend is a killer for hire who has taken a job to dispose of Lucas.
When an old man running from the law asks Lucas for help, Lucas orders him away at gunpoint.
Lucas' help is needed when a group of lawmen have difficulty capturing a gang of outlaws.
A recluse is the only one who can save Lucas and Mark when they get caught up in quicksand.