Patrolling the plains, Marshal Sam Buckhart discovers a wagon containing a murdered man and his eight-year-old daughter. The girl is able to give Buckhart a description of the killer.
For years Sam Buckhart has been looking for a bank robber. He is stunned to discover that the thief is Sheriff Max Chafee, who Sam believed to be honest and straightforward.
Marshal Sam Buckhart, who has been searching for outlaw Charlie Slade for many years, finally locates his hideout. Before Buckhart can take the outlaw prisoner, Slade's henchmen overpower him.
A man who lives in the mountains kills a young girl; Sam Buckhart is assigned to find the murderer.
Deputy Marshal Sam Buckhart is assigned to bring a dangerous outlaw to the prison at Mescalero. During the journey a band of outlaws ambush the stagecoach.
An Apache named Charlie Wolf kills a Marshal and Deputy in a ghost town when they try to arrest him after breaking jail. It turns out he and Sam grew up together. Sam goes after him alone, saying it's the only way he would ever be caught.
After rustlers steal two of Cameron's prized horses and kill the foreman, Sam Buckhart and his deputy, Walt Timmins, go looking for a Comanchero party.
Sam finds himself in the middle of a mess when a bounty hunting lawman comes to Santa Fe. Marshal Morrison had vowed to kill Santee when he served as a guard at Andersonville prison camp during the Civil War.
Sam Buckhart must work as a Marshal for a town after the People's Committee hangs one of Zeb Derkson's men. Zeb Derkson is the leader of a gang who's making the town a haven for outlaws. Buckhart becomes suspicious of Derkson after one of the People's Committee members is murdered.
Sam Buckhart comes upon a gentleman roaming the desert after three masked men jump him and steal his horses and gear. The gentleman isn't so gentle with Tree Strelling, who runs the town, and finds himself in a lot of trouble.
Sam is asked to help a man who's been accused of cold-blooded murder. When a lynching mob gets out of control, Sam decides to transport the prisoner to Albuquerque to stand trial and his wife goes along.
Sam goes to Shannonville to investigate the murder of a man, but is met with cold reception. He is determined to get to the truth and arrest the man who committed the murder, but Walter Shannon runs the town and everyone in it, and he will do everything in his power to protect the murderer.
Benson and his boy, Healey, kill Mr. and Mrs. Dawson and take over the toll road and home they own.
While chasing after two bank robbers, Sam kills one in self-defense. The bank robber's son, Clint, threatens to kill Sam.
While traveling back to Santa Fe, Sam and Tess come upon an old farm that was attacked by renegade Indians.
Sam sets after a couple men who dressed up like Indians and stole the diamonds from a Mary statue in the church and killed the priest.
While traveling back to Santa Fe, Sam and Deputy Forbes stop at Libertyville so Sam can visit an old ninety year old friend, but Sam decides to stay and investigate the reason behind a seemingly fake preacher and a man carrying a bag full of peppermint candy.
A gypsy who is hated by the locals is accused of a rancher's murder. Sam believes the man is innocent and works to clear him and find the real killer.
People in Santa Fe are about to take the law into their own hands, fearful the prisoner being held will attract his murderous compatriots. Sam, temporarily the lone lawman in town, refuses to turn the prisoner over to another marshal; he's not convinced the lawman is who who he claims.
After Gentleman Frank Deegan is shot while robbing a stage, he take refuge in Martha's barn. Sam arrives back in town and goes looking for him.
A man is mysteriously gunned down on the ranch he worked on. Upon further investigation, Sam begins to believe things did not happen the way she says. Sam is more convinced than ever when the dead man's father, Hodie, comes up murdered.
Sam must investigate a series of unexplained shootings that have occurred after receiving an unsigned letter stating the Sheriff is incompetent.
A rancher murders a local teenage boy's father in order to get his land. Sam tries to help the boy keep his land and bring his father's killer to justice, but that's complicated by the fact that the boy hates Indians.
A young man rides into town and allows everyone to believe he is Billy the Kid.
Sam becomes involved in a conflict between a slow-witted gunfighter and the greedy husband of a woman the gunfighter is in love with.
Sam strikes up a friendship with a wanted female bank robber--who doesn't know that Sam is a deputy marshal.
After Governor Lew Wallace grants amnesty to every gunfighter in New Mexico Territory, Sam is forced to release a man who just killed a rancher.
Sam tries to help a young woman who lives in the backwoods with her father - who has decided to sell her into slavery.
Sam is captured by a gang of greedy gold prospectors, who force him to lead them to a treasure site - where a group of Apaches seeking vengeance are waiting for them.
Sam Buckhart uses a two man circus and their wagon to go capture an outlaw.
US Marshal Sam Buckhart arrives in North Fork in search of renegade Indians suspected of the brutal killing of a Texas Ranger and his family, but the townspeople are suspicious of him when they discover that he too, is an Indian.
When renegade Apaches wound Lucas McCain and kidnap his son Mark, Marshal Torrance joins with US Marshal Sam Buckhart to form a rescue posse.