This series begins its fourth season with an episode where Jess Harper must rescue Mike. He does handily seeking out bandits who shot down Mike, finding them, getting beaten half to death by them, returning to even out the score and then some.
A Union Army hero campaigning for the Presidency must face down a group of killers who want to make sure he never achieves his goal. Three gunmen ambush Jess Harper and Yankee General George Barton to prevent the General's possible presidential nomination.
Jess receives a letter postmarked in Laramie from the sister he believed dead. She has returned to bury her husband who was an outlaw.
Injured while hunting cattle thieves, Jess Harper is mistaken for one of the rustlers and plans are made to hang him.
Hobey Carson, an unsophisticated mountain boy, comes to town hoping to win the $1000 first prize for marksmanship in "The Sunday Shoot.
Three outlaws force a wealthy rancher to write a $25,000 bank draft and a letter of identification, then kill him in "Double Eagles."
Slim is deputized to protect a suspected killer, target of a murder attempt while awaiting trial. The suspect's lawyer then makes an attempt to free his client from custody.
Gunfighter Leo McCall has deserted his wife and son, Skip, but the youngster still believes there's some good in his father. The boy's effort to reform his outlaw father collapses when the gunman plans the death of Jess Harper.
The doctor who has to amputate a young man's arm turns out to be Dr. Samuel Mudd, and the man's father vows to kill him.
While out of town, Sheriff Cory captures a bank robber. His partners are heading to Laramie and an unsuspecting Deputy Sheriff Jess and his helper, Cory's nephew, a wannabe deputy.
Slim returns from bossing a cattle drive, and learns that a rancher's son who stayed behind in Colorado has been killed. He goes back there to find our under what circumstances it happened.
When Jess kills a suspected murderer in a shootout, his brothers come to town looking for revenge. With a broken gun hand, the odds don't look good for Jess.
An agent of the stage line comes to town looking for his missing daughter. From her picture, Jess recognizes her as a bar girl/prostitute, and Slim goes into town to try to keep her father from finding out what she's become.
An outlaw who was once pals with Jess tricks him into setting up the town for a bank robbery.
Jess rescues a man from some Shoshone, and Slim offers him a job. But the outlaw gang he quit to go straight frames him for a stage holdup to force him to help them with a bank job.
When Slim goes missing from a posse chasing an outlaw gang, Jess goes out alone looking for him, and finds their leader with Slim's horse.
On their way to a ranch to buy horses, Slim and Jess come across a strange family of mustangers, which includes women who may have been Comanche prisoners.
At the ranch, three men rob a stage line agent of the company's money, and shoot him and Jess. Deputy Slim goes after them alone, kills one, and is accused of murdering a prominent citizen's son.
Jess is goaded into gunfights with a man, his two sons, and the gang who robbed another relay station.
Deputy Sheriff Slim defends two Arapahos accused of murder.
Daisy and Mike find a wounded man and take him back to the ranch. The gang who forced him to help them rob the bank kidnap him, and deputies Slim and Jess go after them.
Jess and a pair of newlyweds who are friends of his find a mule carrying sacks of mined gold, then the mule's owner. Jess and his friend fight over returning the gold to him.
The cost-cutting actions of a new stage line agent put drivers' lives in jeopardy, but Slim and Jess ride shotgun on their own time to help out.
Jess finds debris from a Union Army wagon that carried $60,000 in gold dust during the war. Slim's father was their guide, and was suspected of selling them out to the Confederacy, and now Slim wants to clear the Sherman name.
An immigrant Swiss mountaineer is hunted by an obsessed lawman and a Laramie posse, which includes Jess, who's injured and saved by the hunted man.
Jess is seriously wounded by an outlaw gang trying to free one of its members from a prisoner transport.
A dying outlaw turns himself in to a former fellow gang member turned bounty hunter turned preacher, so he can collect the bounty and build a church. Jess defends the preacher against the townspeople, who fear retribution from the gang.
A bar girl warns Slim about an attempt to drug and rob him in Cody, Wyoming. She asks him to take her and her father, who stole $50,000 from the bank where he once worked, to Helena, Montana, by wagon, to return the money. Along the way they are trailed by a corrupt sheriff, and separately by her former employer.