Cady gets a new job offer while Vic worries Walt wants her to lie for him. Nighthorse continues his egotistical posturing and Barlow implodes with his own malice.
After killing David Ridges, sheriff Longmire uncovers a clue that could prove that Ridges killed Miller Beck. Meanwhile, Branch is curious about a possible relationship between his father and Jacob Nighthorse.
Henry gets Gab to safety but danger follows. Ferg misses Zack and Vic missteps with Eamon. Walt meets the medicine woman and progresses with the Doc. Mathias makes an arrest in the 'Hector lives' campaign. Jacob makes a proposal to Cady.
In the wake of discovering a dead body in the river from a supposed suicide, Walt soon discovers evidence pointing to murder. Walt makes it his mission to bring Nighthorse to justice.
Branch ties Jacob Nighthorse to Cady's accident after a suspicious suicide, Vic takes matters into her own hands with her stalker, and detective Fales returns to town to put the heat on Walt and Henry.
After a car accident, Vic and her husband Sean are captured by a survivalist who is also a suspect connected with sheriff Longmire's wife's murder, and Longmire is forced to work with Ed Gorski to get them out.
The shooting of Gab's remaining rapist has unintended consequences. Walt tries to figure out motives for the deaths and continues spending time with Dr Moynihan. Henry takes Gab to a medicine woman. Zack has a stalker.