Longmire and Lucian Connolly work together to track down three suspects in his wife's murder, Henry searches for the man who can prove his innocence, and Branch's investigation tactics nearly get him in trouble with the law.
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.
Longmire investigates the death of a farmer who was about to be evicted from his land, Branch and Cady investigate a lead in Denver on behalf of Henry, and Vic contemplates her future with the sheriff's department.
Branch has proof that David Ridges is alive, and Longmire connects him to Jacob Nighthorse. Meanwhile, Sean makes Longmire serve divorce papers to Vic, and Henry faces another setback related to his trial.
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.