The valley residents turn to the Barkleys when the railroad threatens their farms and ranches.
Heath considers letting a Civil War general join his mission; guest Andrew Duggan.
Obsessed to learn her late husband's past, Victoria endangers her life in a mining town.
Audra's beau, supposedly a traveling horse trainer, is part of a violent band of extortionists.
The government wants an old man's land as the site for a beneficial dam; guest Arthur O'Connell.
Heath faces off with the young head of a fanatic society secretly planning to blow up a Barkley mine.
A Spanish nobleman threatens to foreclose on ranchers when Heath falls for his daughter (Katharine Ross).
Infatuated, the son of neighbors attempts to force himself on Audra.
An earthquake traps Victoria in a cave with a violent drunk and a pregnant Indian; guest Charles Bronson.
Jarrod incenses neighbors and family when he defends a man accused of killing a prominent Stockton resident.
Nick's childhood friend discovers anthrax in his herd while it is pastured on Barkley land.
Bitten by a rabid wolf, Nick waits out the disease's incubation alone, to spare his family; guest Ronny Howard.
Heath claims a new foreman was once commandant of a corrupt prison camp in the Civil War; guest John Anderson.
Nick takes on the leader of Irish immigrants who settled illegally on Barkley land; guest Claude Akins
Jarrod tries to reform an outlaw's girlfriend (Lynn Loring) by having her spend Christmas with the Barkleys.
Cutthroats wound Heath while Nick and the hands are away; guest Yvonne Craig.
Nick's new fiancee joins the family on an annual camping trip in the mountains, but jealousy ends in tragedy.
An old school chum of Jarrod's may be a counterfeiter and bank robber; guest William Shatner.
Victoria is startled to learn why outlaws kidnapped her while she was substituting for a schoolteacher.
Jarrod insists on helping an ex-inmate whose murder conviction was overturned; guests Bruce Dern, Albert Salmi.
A dance-hall girl (Jill St. John) helps Jarrod rescue Nick and some ranch hands shanghaied by a captain.
A killer involves himself in a quarrel between the Barkleys and neighbors, already resulting in a death.
After Heath asks a friend to do a job, the man is thrown from a horse and paralyzed; guest Marilyn Mason.
In a secretive town, Jarrod investigates Heath's hatred of a man rescued from bounty hunters.
Heath finds more than he bargained for when he takes the blame for killing an old love's drunken husband.
Victoria forces an escaped convict at gunpoint to rescue Heath from beneath a mudslide; guest Bruce Dern.
The Barkley men must clear their father's name of accusations of taking Union Army gold thought lost in a shipwreck.
Audra falls for a speculator planning to foreclose on desperate ranchers to whom he gave high-interest loans.
Victoria helps a friend and her ex-outlaw husband who have opened a store next to a warehouse of gold.
A doctor treating train-passenger Audra for appendicitis meets enemies who reveal a secret from his past.