Mark heads for Wyoming to search for Lucas, who's on the trail of a gang illegally selling weapons to the Indians. (Part 2 of 2)

When their wagon breaks down, Mark and an injured Lucas are stranded in the desert.

Mark blames himself for a friend's accidental death.

Red-headed Lou Mallory arrives in North Fork and soon arouses the townpeople's suspicions.

When an outlaw leader lures Marshal Torrance out of town, Lucas is the only one who can stop him from lynching a local man who killed one of the members of his gang.

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.

Lucas thinks he has seen a ghost when a young man, eerily similar to a man he killed in the Civil War, challenges him to a gunfight.

Blinded in an explosion, Lucas fights despair as he prepares for a meeting with a gun-toting enemy.

When Lucas hires an ex-con as a ranch hand, the man is the first one under suspicion when a robbery and murder occur in the area.

Lucas agrees to take a job as a federal undercover agent and goes to Wyoming to investigate rumors of sales of arms to renegade indians. His life is endagered by the town drunk who stumbles onto his true identity and purpose. (Part 1 of 2)

Ward Haskins guns down Joe Flecker, who has evidence that could be used to blackmail him. Haskins thinks the information was given to Lucas, since he brought Flecker to the doctor before he died. Stirred up by Haskins behavior, Lucas goes through Flecker's things, finding a wanted poster for Haskins in the sole of Flecker's boot. He also finds Doc Burrage drinking. Doc is discouraged because three children have died of an anthrax epidemic that he has the new serum for, but nobody is willing to allow him to administer it in time. Haskins rides out to the ranch and is bitten by Flecker's horse, which is now believed to have anthrax. Mark overhears about how anthrax always causes death and is worried because he had bitten by Flecker's horse, also.

Lucas, accused of horse theft, struggles to clear himself before a lynch mob catches up.

When a rambunctious teenager wrecks a schoolroom, Lucas McCain, as a member of the North Fork school board, asks the boy's reluctant uncle to pay for the damages.

Lucas tracks an escaped prisoner to a town that turns out to be run by the gunman's brother, notorious for shooting people in the back.

An assassination plot unfolds as four gunmen disguised as cavalrymen enter North Fork. Their target: Sen. Jim Borden. Their weapon: a Gatling gun.

Sammy Davis Jr. stars as Tip Corey, son of a man allegedly murdered in North Fork.

Lucas's old Army pal settles in North Fork with his deaf daughter.

Two ex-Confederate officers seek revenge on Lucas, who served as prison guard during their internment.

A new store owner upsets the town by demanding that all credit accounts be paid off.

Lucas looks for answers when recovering alcoholic Micah Torrence returns to the bottle—and turns in his badge.

The widow of a bandit killed by Lucas plots a grotesque revenge.

A sharecropper enters his colt in a horse race, hoping to win enough money to buy his farm from the owner, who has bet on Mark McCain's entry.

An ex-convict is blamed for a brutal crime despite his claims of rehabilitation.

A group of outlaws devise a plan to get rid of Lucas so that they can take over the town of North Fork.

To keep his invalid mother happy, an outlaw forces Lucas and Mark to go along with a masquerade that he is the owner of Lucas's ranch.

A former army captain comes to North Fork to kill the man who shot down his son in a gunfight - Lucas McCain.

Dan Nowry, released from Yuma prison, arrives in North Fork intent on getting even with Marshal Torrance,who helped send him to jail.

Lucas and Mark attempt to reform a con-man.

Trouble brews at Lucas's when a whisky salesman and a gunfighter fall for the same woman.

After Mark contracts typhoid fever and has a vision of his dead mother, he no longer seems interested in getting well.

Lucas becomes involved in a battle between an aspiring writer and a cocky, bragging trail boss.

After the daughter of Lucas's friend the hotel clerk arrives in North Fork, two strangers threaten her life.

Mark goes to work for Will Temple, a badly scarred and very mysterious rancher.

Mark finds himself in grave danger when two unscrupulous detectives searching for a man's long-lost son claim that it is Mark.

Marshal Torrance is heading home from a cattle sale with Lucas and Mark when the old lawman mysteriously disappears. They trace him to a nearby Mexican ghost town. (Part 1 of 2)

When a wealthy rancher is killed, Mark suggests that they seek the aid of a mind reader to identify the murderer.

Lucas puts his life in jeopardy when he agrees to testify in a murder case where the first witness was killed before he could testify, and the killer is still at large.

Lucas's self-confidence begins to slip away when he misses an easy shot.

A head wound wipes out Lucas's memory, leaving him with only one clue: he's wearing an outlaw's gun.

Lucas is torn by conflicting emotions when he meets the town's new preacher—a former outlaw whom the Rifleman vowed to kill.

A janitor-turned-gunfighter whose reputation hangs on one lucky shot—and a lot of gall.

Lucas is out for vengeance when Mark is used as a pawn in a bank robbery scheme.

Lucas finds himself involved in murder when he gallantly steps to the aid of a beautiful woman.

When a horse dealer transporting a prize stallion stops in North Fork, two saddle tramps try to use trickery to obtain it.

After a young stablehand kills a notorious gunslinger, he is baffled by the hostility of the townspeople about giving him the reward.

Mark is kidnapped as he and his father try to protect Banker Hamilton's gold.

Two hired hands of a wealthy cattleman, who has been using the ranch for grazing his cattle, demand that Lucas move out. When Lucas refuses, he is beaten and dragged and then the ranch house is burned down. They left Lucas and Mark with the burning house and rode off with Lucas' rifle. Leaving Mark to tend to the animals, Lucas tracks them down and confronts their boss, Mr. Jackford.

Newly arrived gunslinger Al Walker throws a mammoth party at the saloon, keeping acting Marshal Ben Waller busy until Lucas is forced to intervene.

Lucas helps his former Army captain, now an undercover federal agent, infiltrate a gang of bank robbers.

Frank Blandon, a man with only one good arm, wanders on to the ranch. Lucas gave Blandon a job to ""hire him and Mark a clear conscience"". General Sheridan and his patrol wandered by and Lucas offered to let them stay the night at the ranch. Blandon pulled a gun on General Sheridan, as it turned out Blandon was a confederate soldier, who once had General Sheridan in his gun sight during the war. Blandon hung fire, but Sheridan did not hesitate and blew out Blandon's shoulder. General Sheridan shamed Blandon out of exacting his revenge, then lifted Blandon's spirit by praising Johnny Rebs' fighting spirit. Sheridan ordered that Blandon be taken to a hospital to have his shoulder properly mended, carrying out his Commander in Chief's last order to ""Bind up the Nation's wounds.""

The notoriously lazy Jackman brothers discover their mortgage has been foreclosed.

Lou looks for a way out when the man her dying father promised her to arrives.

Lucas, who blames his wife's death on his father-in-law, refuses to help the old man elude gunmen.

A Japanese nobleman seeks revenge when his servant is insulted.

Mark befriends singer-banjoist Lafayette Bly, a blind man with an acute sense of hearing—and a very strong grip.

New arrival Mario Arsatti becomes very friendly with Lucas, but this turns out to be merely pleasure before business: he's been hired to kill Lucas.

A famous buffalo hunter tries to goad Lucas into a shooting match.

Lucas is drawn to a young widow passing through town on her way to claim an inheritance, but others who covet it are trying to kill her.

Mark and his girlfriend Laurie discover that an old hermit is very lonely.

Gavin and Ezra Martin think that Lucas killed their son Clemmie while taking part in a train robbery, and Lucas refuses to tell them what really happened.

The pangs of first love are painful for Mark: the object of his affections has eyes for another.

Corey Hazlett insists he's innocent of murder, despite Lucas's eyewitness testimony.

In a ghost town, Lucas, Mark and Micah tangle with the Newman family and learn the secret of the town's 20-year-old mystery of a lost gold mine.

At Halloween, rustlers take advantage of the seasonal disguises to raid a cattle ranch.

Lucas unmasks a killer posing as a door-to-door seed salesman.

McCain befriends Donnel O'Mahoney, a tough kid from Brooklyn, and arranges with two men for the young man to continue his travels on their wagon, but then one of them is murdered and the other accuses the boy of having done it.

Fast-draw artist Wade Randall is less than anxious to display his prowess.

Townspeople brace for the worst when a new girl arrives—with symptoms of smallpox.

Dan Willard is filling in as temporary marshal while Micah is away. Some Texas cowhands are in North Fork looking for some fun and relaxation, but Dan keeps coming down hard on them. Dan's father tells Lucas that he feels Dan is trying to prove himself as a man to compensate from being dropped from West Point Academy because of his poor eyesight. The Texas cowhands have had enough of being pushed around when Marshal Dan posts an ordinance that all visitors must check their guns at the Marshal's office. Now, they're out to cause some real trouble for Dan.

Lucas makes a life-or-death decision when Micah is held hostage and the kidnappers demand the release of a notorious outlaw.

An old friend of Lucas's returns to town in the company of a shady gambler and is accused of cheating at cards.

Mark and Milly are held prisoner in her general store when two gunmen attempt a daring robbery.

The town of North Fork becomes a haven for outlaws when suave Ben Judson smooth-talks his way into the marshal's job.

Seven condemned murderers escape and take over the town of North Fork.

When renegade Apaches wound Lucas and kidnap Mark, Marshal Torrance joins with U.S. Marshal Sam Buckhart to form a rescue posse.

Rebecca Snipe is returning to North Fork after a long visit away. Before her stage left, she over hears a man saying he's going to North Fork to kill a big man with a big mouth. Upon Rebecca's arrival in North Fork, Mark is smitten with her and gets it in his head to play matchmaker between her and his pa. Thinking Lucas has intentions on their sister, the Snipe brothers come looking for Lucas to see if he measures up to their standard of being good enough for her.

A snake crawls into Lucas's bed, and Mark must lure it away before it strikes.

Mark discovers that the new preacher and his wife are impostors planning a robbery.

A Chinese man and his son fight prejudice as they try to open a laundry in North Fork.

Lucas tries to find out why Mark has taken a job as a stableboy.

Mark learns that the prisoner Micah is escorting to the gallows is the man that saved his life three years previously.

Judge Burton seeks ""Justice"" against the Hangman, who hanged his son; the Judge, who sentenced his son; and Lucas, the man who caught his son. When Judge Burton discovers that Lucas has a son, he decides that the best way to serve justice is an eye for an eye, a tooth for a tooth, a son for a son. Judge Burton tied Lucas to a wagon and went to hang Mark, feeling that Lucas should feel the same agony that he had felt waiting for is son to be hanged.

Lucas is taken hostage by two prison wagon drivers angered that he won't give them more whiskey.

A gunslinger rides into North Fork for a meeting with Lucas.

Wes Carney and his wife Clair want to settle down and they figure North Fork might do fine. Wes is a well known gunfighter, who has promised Clair that he would hang up his guns for good. The Carney's want to live a simple, honest life and the Feed and Grain Store, which is up for sale, seems like it might work for them. Carney's reputation and the news that he's settling down brings troublemakers to North Fork. Lucas is the only man willing to stand as deputy with Micah. After Lucas tells the Carney's a story, Clair releases Wes of his promise and the three men take on the troublemakers. After the showdown, Clair announces that Wes will be taking the Sheriff's position he was offered in another town, if it's still available.

Lucas becomes the target of a vengeful mountaineer.

An Englishman arrives with a custom-made rifle—and a plan to kill Lucas.

Lucas begins a trek to find a cure for Mark, who is paralyzed after a bad fall.

No one's more surprised than Micah when newcomer Leota Carraway claims he's her long-lost husband and the father of her child.

A blacksmith-turned-deputy sets the stage for trouble when he demands that all townspeople turn in their weapons.

When an expected lawman doesn't arrive from Denver, several gunfighters arrive in North Fork and cause trouble.

A railroad gang boss frames an Apache.

Aaron Pelser's wagon train came across a pair of young boys on a buck board heading west and invited them to join the train. When he found out that one of the boys was actually a girl and the two claimed to be headed to Yuma to get married, Pelser and his crowd force them to be married in North Fork. The wagon train folks want to throw a shivaree, which may have been innocent enough except for two reasons. The first reason being that the couple does not count it as their wedding because they want to be wed by the groom's father in Yuma. The second reason is that Chet Packard keeps pushing things too far, beyond the spirit of a friendly shivaree.

Abel Goss, the photographer who took Lucas' wedding photograph, is in North Fork doing a portrait of Mark standing in the street. When Goss sees Col. Whiteside and his sidekick Jamison, he recognizes them as the butchers who tortured him and others while he was captive in their prisoners of war camp. When Lucas stops him from killing them, Goss swears to kill those men. Whiteside planned to call Goss out, but he had Jamison shooting from the upstairs hotel window, as his insurance. When the shots are fired, Whiteside is dead, shot in the back, and his gun hadn't been fired. Goss is arrested and at the trial Lucas and Mark have different testimonies. Mark reenacts the scene in the street, and Lucas backs Mark's theory , using the photographic negative Goss had shot of Mark.

The Queen-to-be of France hides out in Northfork.

A peddler is implicated in a series of murders.

When a stranger arrives to marry the town spinster, two brothers who want her land try to discourage him with threats and a beating.

A lively old lady arrives in town hot on the trail of a notorious bandit—and the reward money for capturing him.

A deathbed request from an old friend sends Lucas to a neighboring town in search of the man's long-lost sweetheart.

When an Italian Count arrives in North Fork, his strange attire attracts the attention of Groder, a town bully. Groder trying to have fun with this stranger, destroys some of the Counts currency, mocks him, and tries to humiliate him. Eventually the Count challenges Groder to a duel and asks Lucas to be his Second. They meet at dawn and the Count, the offended party, brings his single shot dueling pistols, something Groder is unaccustomed to. Lucas as second must see that all rules of the duel are adhered to.