Longmire uncovers long-buried family secrets when he probes the deaths of a man and his award-winning horses in a barn fire.

Walt and the team look into the disappearances of several Cheyenne foster children and an unregistered sex offender.

The Tribal Council president is found dead on county land but it s clear he died elsewhere and there is soon a large suspect list. Walt deals with feelings of betrayal when he uncovers Cady and Branch s affair.

Walt and the team explore Absaroka's Basque community when a shepherd and his dog are found dead. Branch walks a thin line in his alliance with Jacob Nighthorse. Meanwhile, Cady looks to Detective Fales for answers about her mother's death.

Walt is tipped off to the murder of a supposed psychic by the Contrary Warrior, a Cheyenne who does the opposite of what people expect. While deciphering his backwards clues, Walt must also deal with a public debate against Branch.

Following an explosion on the reservation and the discovery of a charred dead body, Walt is bombarded with public confrontation as the Cheyennes blame the blast on gas leaked from fracking by Newett Energy. Meanwhile, Branch reconnects with Cady and uncovers information that could help him in the election.

On election day, Walt and Branch aren't thinking about politics when Cady is badly injured by a hit-and-run driver. Vic and Ferg investigate, and Walt has a flashback to when Cady was a little girl.

When a game warden is killed alongside an elk that was poached, Walt discovers a connection to a rare expensive supplement. Walt completes his sacrifice, and Branch closes in on the truth about Cady's accident.

Walt and Branch team up when an apparent suicide is connected to Cady's accident. Meanwhile, Detective Fales returns with warrants, forcing Walt and Henry to face what happened in Denver.

A media frenzy erupts when a long-lost heir who went missing 30 years earlier is found dead. Henry makes a risky decision on his own.

Walt is seriously concerned by Branch's behavior, but makes a key discovery in the David Ridges case. Henry faces a major setback in his trial. Vic makes an important decision about her future.

Walt seeks closure in his wife's murder and Henry's case. Branch is suspended but 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.

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 a former suspect in a rape case ends up dead in another county, Walt and Vic aren't convinced the death is an accident.

The line between justice and the law gets even blurrier for Henry and Walt as their hunt for a killer intensifies.

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.

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.

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.

While Henry recuperates, Walt investigates the murder of a man whose land is popular with treasure hunters.

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.

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.