A marshal with a reputation, finished with his last job in Abilene, comes to a town needing a new one. His job priorities are to find the killer of who he replaced and to hire a deputy, a hard job to fill.
Troop has his hands full when he arrests a tough cowhand who comes to Laramie periodically. Goading boys and men into gunfights is his method but Dan doesn't get the support of the town council so he may have to find other means.
A stranger rides into town, playing jokes on the locals and a story about Johnny's dad who he always believed was shot by raiders. The story he's told causes him to quit his job until Troop discovers the real history his deputy never knew.
Marshall Troop takes two men to the territorial prison. One a doctor and the other to be hanged. When they run across a stage that's lost a wheel, the doctor must decide between helping a murderer go free or the oath he took as a doctor.
A vilified man is in Laramie. It's up to Troop to get Bob Ford on the 4pm train before he is killed or lynched by the good citizens, who have nothing good even to sing about him.
The verdict is in - Kate Wilson is once again found not guilty of a crime. If the marshal has any say, her feminine charms have been wielded at the male population one too many times because he has a plan.
A bounty hunter brings a body into Laramie to collect the fee. He finds out that another wanted man may be hiding out under another name. He sets his sights on taking him in even though Troop has said "no more business for bounty hunters."
Wrongly accused a thief, Bill Andrews is locked up trying to defend himself. With a bad family history, no one seems willing to vouch for him except his longtime friend Johnny McKay who puts his own reputation and badge on the line.
Wing Soong Ling is killed. When the marshal finds his wife, he is told of the fear of extortion and murder in the Chinese camp. Can he help them and the town overcome bigotry even if they feel they can't help themselves?
Some of the businessman feel the marshal's rules, like curfew, are hampering their business. They decide to do something about it themselves but not with a low card. The one who draws the short straw wins.
Johnny's former girlfriend is in town to clear up her father's estate. Hopes to rekindle the flame are dashed when her old beau arrives. Johnny kills him and tries to prove it was self-defense but no gun is found.
A familiar story - cattlemen vs homesteaders. An old law friend of Dan's is hired to assist the cattlemen. The rumor has it the homesteaders are rustling their cattle. Before the truth is learned, it may be student vs teacher.
Josh Teller hates Indians and tries to run off the daughter and Indian wife of a neighbor who has passed away. However, his son is attracted to the beautiful girl.
Jack McCall shot and killed Wild Bill Hickok in the back. When he holds his Uncle Jess and the doc hostage, Johnny has to think fast and hopes Marshal Dan can think even faster.
Troop is trailing two outlaws. When he is mauled by a hungry bear, his good Samaritan proves to be the sister of none other than one of those he's after.
A wagon rides into Laramie with its owner lying in the back, hurt. A sheriff rides in saying he's wanted elsewhere for cattle rustling but he says he has a valid brand release. Troop must get answers quick or be forced to turn him over.
An Army Colonel's son, who only wants to pursue a writing career and not a military one. Troop is given 24 hours to find him or he will be charged with desertion. A demoted sergeant wants revenge and does all he can to "help" the boy.
The buffalo hunters are stirring up trouble with the Shoshone. Troop fears a bloodbath when a man is hung and he is closely related to the tribe. It isn't until later he learns just how close.
A reformed gunslinger is in town to meet his fiancé and head west. Troop wants no trouble while he's there from his old friends or enemies. When she doesn't arrive, he starts drinking and listening to those goading him into a showdown.
A popular newspaperman is killed at a wedding. Because of the circumstances surrounding the killing, Troop suspects that it was a case of mistaken identity. But which one of the respectable townsmen is holding a grudge and against whom?
A popular new chef was supposed to work for a rancher for a year after agreeing to come from Europe. However, he has a chance to be a partner in the restaurant if Troop can help him overcome the legal contract he signed.
Beth Hunter brings in Sam Turnbull's body. She claims it was done by her husband so Troop gets a posse together to go after him. After they leave, the truth comes out and Johnny rides after them to try to prevent a miscarriage of justice.
Jack Rollins, a famous gunfighter, comes to town on some personal business. When Troop finds out what that is he intervenes to make sure Jack's reputation doesn't hurt someone he says he cares for very much.
The sole survivor of Pell Creek Bridge has been living a nightmare since the incident. The Army court martialed him for what others feel was heroism. His latest episode forces Troop to intervene before someone gets killed.
Clay, someone from Troop's past, rides fast and far to help him meet a gang bent on getting revenge. When he is shot, Dan and Johnny must fend for themselves as they can't seem to deputize any of the locals.
Ma Carey's son breaks out of jail. Troop and Johnny go after him and kill her youngest instead. Who's bullet did the deed is kept secret by Troop and Doc as the brothers are coming for their revenge.
Ike Smith's three ranch hands are young, tough and don't respect authority. He is killed trying to fire them so they go to Laramie. Troop is away and their attitude makes Johnny take notice. They won't go away without forcing a showdown.
Troop befriends a convict he jailed. When the driver of the stage he's riding shotgun on is killed, talk is he's picked up his old ways with the old gang. With a posse on the hunt for them, the gang figures they can pick the town clean.
A letter from Ward Beech in Socorro, NM, says he was being held for murder but he was sleeping it off in Troop's jail on that same date. When Troop goes there to investigate, he finds more than the sheriff is willing to hide what happened.
Lorna Williams comes to Laramie seeking more than a job as a dance hall girl. She wants to avenge the man she loved. The man she is after is in Laramie but neither she nor Dan Troop has any idea what he looks like.
Released from prison after 2 years, Ben Adams wants to get on with his life. When he is drawn back with the same men who helped put him there, he wonders if the $15K from that bank holdup they never recovered isn't a better way to go.
A senator is arriving on the midnight train. A plot to kill him is wired to Troop and he has little time to figure out who and why before it arrives as that hour draws near.
A saloon girl is found dead, her head bashed in. As Troop tries to uncover the killer, a valuable ring may have been stolen from her and the likely candidate has just been killed himself.
Ches Ryan, running from a bank robbery, comes upon a cabin with two children suffering from a plague. With Troop about to catch up, he stays to help but Troop gets sick too. He must now decide what's important: money or his three patients.
When Buck Walsh's nephew shoots up the local saloon and is arrested, his efforts for freeing him are stonewalled by Troop. When his true agenda is realized, Dan and Johnny work fast to diffuse that as well.
When Dan delivers Running Deer, the chief's son, to his father, Johnny is held with the promise he will die unless Troop delivers the man who did the crime - and he only has until dawn.
Buck Harmon returns to Laramie with an outlaw gang planning to rob the bank. He is sent in to scout the town and finds his old friend is the deputy marshal.
