*** Dan Troop arrives in Laramie to take up his new duties as Marshal and is challenged at once by the three Hawks brothers, a family of bullies responsible for the death of the town's former Marshal.
Dick Sellers, a bully forces inexperienced young men and old timers to draw on him then guns them down. Troop insists Sellers stand trial but the city council shies away from such action.
A thief and murderer rides into Laramie and leads Johnny into believing he's his father.
While transporting two prisoners, Dan and Johnny encounter a stage coach needing repairs. One prisoner tries to escape while the other prevents him.
Bob Ford, the man who murdered Jesse James comes to Laramie and an angry mob gathers. Dan wants to get Ford on a train and out of town before the situation boils over into a lynching party.
A female saloonkeeper with a long list of crimes is brought to justice when an old boyfriend serving time agrees to testify against her.
A ruthless bounty hunter named Fallon places Johnny is a difficult situation when he comes to Laramie looking for one of Johnny's friends.
Bill Anderson is a good kid from a bad family. When his brother Rick is released from prison, Bill is tempted to join him in a bank robbery. Johnny bets his badge that Bill will not go bad.
Matt Saint is a famous Texas fast gun on the run, not from the law but from his son Mark who wants to kill him for deserting his mother.
A Chinese mineworker is murdered outside Laramie. Troop uncovers an extortion scheme.
Troop tracks two murderers, Wade Horgan and Cole Hawkins to a remote cabin where they have holed up with Wade's sister Betty. Troop is injured on the trail by a bear and is tended by Betty. When Troop's identity is discovered by the murderers, a gun battle ensues. Cole, Wade and the innocent Betty all go down in a hail of bullets.
*** Buffalo hunters provoke a confrontation with the Shoshones after hunting on treaty lands.
Recently released from prison, gunfighter Kurt Monroe has a woman he loves and is determined to go straight and he tells Marshal Troop he wants no trouble. He's in Laramie to meet the stage carrying Lucy, his financee. When he bides his time at the Blue Bonnet, he doesn't drink any whiskey but he has to deal with some admiring "fans" who want nothing more than to see him get in a shoot-out.
Harry Tate, the editor of the Laramie Free Press is shot and killed when he dons the hat of another man.
A wealthy cattleman and a Laramie restaurateur both lay claim to an immigrant European chef.
Marshal Troop single-handedly tries to hold off a posse bent on lynching an innocent man.
A gunslinger arrives in Laramie to take his young son from an elderly couple who have acted as the boy's unofficial guardians.
*** Troop lures a killer out of hiding by spreading a tale around town that he killed the man's brother.
Dan leaves the town in Johnny's hands with the advice to back down from trouble when he can. Three young toughs cause trouble and Johnny's forced into a shoot out with them. When Johnny admits he didn't follow Troop's advice, the Marshal says he made the right choice -- "for a man."
A reformed criminal's efforts to lead a decent life are threatened by his old gang.
Troop travels to Socorro, New Mexico to give alibi evidence for a man who might be hanged. Dan discovers clues that lead to a corrupt rancher trying to protect his no-good son.
Loma Williams seeks revenge on the stage robbers who killed her brother; she kills one of the men just after he tells her where to find his brother - Laramie. Troop wants to apprehend the second man before Loma exacts her vigilante justice in his town.
Ben Adams, an excon, has to choose between leading a reformed life or running off with his old gang.
Dan and Johnny must foil an assassination plot against a senator due to stop in Laramie on the midnight train.
When a young woman is found murdered, Dan sets a trap for the killer.
Ches Ryan robbed the mine payroll in retaliation for his pay being docked. In the course of his getaway, he comes across a town with a fever epidemic. A young woman and her kid brother have both taken ill and have no one to take care of them. Ryan stays despite knowing he's likely to get caught. When Dan catches up to him, they both tend the pair until Dan also gets the fever. Despite the new opportunity to get away, Ryan tends Dan as well. He then returns the money and tells the young woman he'll be back.
Dan would like Doc Holliday to leave Laramie before some vengeful bad guys call him out. But Doc is waiting for a stage bringing a lady.
Marshal Troop is able to thwart a stage robbery when one of the gang is arrested and spills the beans in exchange for some whiskey.
When Sioux Chief Red Horse's son Running Deer is murdered, he holds Johnny hostage and gives Dan until the next morning to find the killer. Running Deer's betrothed White Cloud knows the killer.
After a five year absence, Johnny's boyhood pal Buck Harmon reappears in Laramie to scout the town for the bank robbing Gorman Gang. But he sides with Deputy McKay to fight the gang and loses his life in a shoot out.
An alcoholic appears to have committed a robbery but Troop has a hunch something isn't right.
When the Laramie church goes up in flames, two con-men show up posing as clergymen and fund-raisers.
Dan and Johnny are transporting a prisoner when a rainstorm and nightfall force them to seek shelter in Jack Brace's cabin. Tucupita, the Indian woman Brace keeps as a virtual slave warns Dan that Brace robs and kills travelers.
Troop is forced to kill a gun slinger in the Birdcage. He gets a letter shortly thereafter threatening revenge. When the dead man's father comes to town he hears a local blowhard claim his son was just a fun-loving kid gunned down for no good reason by the Marshal. When he points a shotgun at the Marshal, Johnny steps in between them and talks him down.
Wolf hunter Pike Reese claims to have captured the wolf that's been ravaging livestock in the area but he wants $10,000 or he'll release him. Carl Haydn shoots the wolf in the cage and later turns up dead. Dan has to go after Reese and barely escapes with his life.
Beth Denning arouses men and causes trouble when she comes to town. When she is found unconscious, Roy Grant is accused of assaulting her. A lynch mob forms which the lawmen are able to keep at bay without violence until Beth regains consciousness and names the real culprit.
Artist Frederick Jameson shows himself able to handle the kind of one-on-one confrontations that occur when rustic cowhands are confronted by an educated artist. The murderous gang on his trail is another story.
Lily is threatened with death by a man identifying himself as The Ugly Man. He claims a prior relationship with Lily and knows intimate details of her life. Dan and Johnny keep a twenty-four hour watch with some comic results.
A mysterious thimblerigger shows up at the Bird Cage and insists he's going to ruin a man with his game.
Bad guy Jake Wilson kills a man in the Bird Cage who recognizes him as a wanted man. He and Johnny exchange gun fire and both are hit. Lily has no idea if Johnny is alive or dead. Wilson uses Lily and the others to facilitate his release. He forces the Marshall to disarm and intends to kill him on his way out.