With the help of Vic and Henry, Longmire investigates a backcountry murder with ties to a tribal family.
When an exotic dancer turns up dead on Longmire's territory, he and his team quickly recognize that the victim is from out of town.
A barn goes down in flames with the owner and his beloved horses inside, and Longmire questions the theory that it was a suicide attempt.
A lone fisherman hooks the bodies of two murdered men, once again reminding Longmire that his beloved West isn't the way it used to be.
After a Cheyenne foster child goes missing, Walt and the team investigate the boy's birth family on the reservation.
A body mauled by a bear is found in the woods, and Walt suspects that the bear was baited to attack.
A wealthy beer distributor is found viciously beaten, and Walt wonders why his attacker stole a seemingly worthless painting.
Walt investigates the murder of a gas station owner who tried to help an unstable and barefoot young woman who claimed to be in danger.
When the Tribal Council president is found dead on county land, it's clear to Walt that the body was moved from the original crime scene. But why?
Walt investigates the murder of a teenager who was one of four boys acquitted of raping a developmentally disabled Cheyenne girl.
A peyote-laced feather and a bag of ashes figure into the team's investigation of the attack on Branch. Walt locates a witness for Henry’s defense.
Walt and Vic try to solve the murder of an adopted Russian teenager. Prison politics take their toll on Henry.
Walt juggles an ongoing murder investigation and his duties as a stand-in judge for the Miss Cheyenne pageant; Cady looks to an old friend for help.
After a wilderness leadership trip takes a dark turn, Walt and the team must track down a killer and missing teenage campers.
Former sheriff Lucian Connally helps Walt hone in on suspects in his wife's murder, and Branch ramps up his off-the-books investigation.
When a man missing for 30 years shows up dead, Walt must deal with the media frenzy and determine if he really is the long-lost heir to a fortune.
Vic's vacation weekend with her husband Sean goes terribly awry. Walt must forge an unlikely alliance to stage a rescue.
The investigation into a farmer's apparent murder is complicated by his insurance policy; Branch and Cady go to Denver seeking a lead in Henry's case.
Despite concerns about Branch's behavior, Walt makes a key discovery in the David Ridges case. Meanwhile, Henry faces a major setback.
Walt seeks closure for both his wife's murder and Henry's case; despite his suspension, Branch continues to investigate Jacob Nighthorse.
The team struggles with the fallout from Branch's confrontation with Barlow, and Walt's crusade to bring Nighthorse to justice spins out of control.
Walt is forced to split his focus between new evidence in a personal case, and the murder of a caretaker at a former Japanese internment camp.
The investigation of Nighthorse heats up, but not in the way that Walt was hoping for. Cady makes a shocking discovery.
A body found in the luggage of a tour bus further complicates Walt's troubles with Nighthorse. Henry makes a bold move to help a mother and son.
When the husband of a former soldier is assaulted during an apparent robbery, Walt is drawn into an emotionally charged investigation.
A young Native American girl is raped on the reservation, which sparks new, volatile tensions between local oil rig workers and the Cheyenne people.
A highway robbery sets off an investigation into a strange relationship, while Walt struggles to let go of the past.
When a former suspect in a rape case ends up dead in another county, Walt and Vic aren't convinced the death is an accident.
Henry's attempt at justice backfires, resulting in new problems for him and a new investigation for Walt.
The line between justice and the law gets even blurrier for Henry and Walt as their hunt for a killer intensifies.
A shaky Walt searches for Donna as he and Vic reconstruct what happened in the cabin. Mathias has a deal for Henry. Cady tells Walt about a job offer.
Henry renegotiates his deal with Mathias. Walt's search for Donna leads to too many suspects. A phone message sends Walt down an unexpected path.
Walt unravels the puzzling case of a girl and her missing father. Henry helps Cady find a place on the rez. Malachi and Jacob's alliance is weakening.
Walt and Vic investigate the bizarre kidnapping of a despised drug company CEO. Henry and Mathias deal with the ramifications of an overdose.
Mathias must join forces with Walt after Henry discovers a drug dealer's body. Vic solves her housing problem. Malachi puts a bounty on Hector's head.
Depositions for Walt's case go badly. Ferg loses confidence in himself. Henry and Vic help lead Walt toward the big boss at Manifest Destinations.
When treasure hunters discover a body in a hollow tree, Walt finds a connection to an old case. Cady struggles to help a battered woman on the rez.
Walt looks deeper into the Irish mob. Henry finds the book he needs, while Cady gets legal advice. Malachi and Jacob lob accusations at each other.
Walt's obsession with Jacob leads to more tension with Cady. Vic testifies against Gilbert. Walt's anger erupts at the Red Pony.
Walt gets more bad news from the mayor. Vic does a strange favor. As Walt learns what's behind the lawsuit, Henry and Cady each face tribal rituals.
Longmire risks his life to travel up a mountain by foot in a snowstorm to catch a group of escaped prisoners and their hostages.
Sheriff Longmire discovers that a man found dead in a compost heap had made lots of enemies, and Branch looks for help as he tries to find Cady.
A murdered sheep farmer is killed over a deal to sell his land, and Cady goes to Denver to find answers about her mother's death.
A truckload of cattle is stolen, and the original driver later turns up dead. Meanwhile, Vic receives a mysterious delivery of flowers from a possible admirer.
A body found dumped in an alley leads Longmire to a gang dealing stolen prescription medications. Cady returns from investigating her mother's death.
When an Indian psychic is found dead, the investigation leads Walt and his deputies to a missing girl and secret Indian grave sites.
While serving at the Red Pony, Henry overhears a customer trying to organize a hit on his wife. When the customer leaves, Henry follows him to the car park to volunteer for the job.
A foreman is found killed and dragging behind a horse after an illegal rodeo. Detective Fales arrives from Denver with some questions for Henry.
A local Cheyenne is found dead in a house after a methane explosion, but the emotionally sensitive investigation could cost Longmire points in the upcoming election.
The day of the sheriff's election arrives, but everybody is more concerned about Cady, who is critically injured in a hit-and-run accident.
The sheriff's office investigates the death of a game warden and the illegal shooting of an elk, as Branch contemplates his post-election future.
Longmire needs Lucian Connally's help after a convicted dinosaur bone thief is killed in prison. An old enemy from Philadelphia harasses Vic.
Branch ties a suspect to Cady's accident, Vic takes matters into her own hands with her stalker, and Fales turns up the heat on Walt and Henry.
A bank robbery ends in a shooting, giving Sawyer more leverage against Walt. When Henry goes missing, Cady tells Walt about a disturbing vision.
While Henry recuperates, Walt investigates the murder of a man whose land is popular with treasure hunters.
Chance Gilbert's plea appearance takes a dramatic turn that pulls Walt away from his own case and sets him and Vic on the path to a showdown.
An emotional Vic re-examines her life choices. Henry and Jacob join forces to pursue Malachi. Ferg helps Meg's mother avoid the tribal police.
As the civil trial begins, things don't look good for Walt -- especially after a murder puts him and Vic under suspicion.
The bizarre death of a drug dealer points to a violent new Hector. Cady tries to help a sick child whose parents don’t trust Western medicine.
Walt wonders if a presumed-dead member of the Irish mob is alive. Mathias questions Cady about Catori. A mobile clinic raises Henry's suspicions.
While Ferg secretly works the Cowboy Bill case, Walt and Vic try to find Shane Muldoon. Cady's office is trashed.
Vic gets a surprise visit from her father. An FBI agent helps Walt pin down the mole working with Malachi. A tough race enables Vic to move forward.
Jacob's troubles escalate at the casino. Walt gets an unexpected visitor. An inevitable confrontation leads to changed lives.