Walt identifies a body that isn't Donna; Mathias begins his blackmail of Henry.
Walt and Mathias are forced to work together on a drug-related murder. Longmire - Season 5
Malachi and Jacob Nighthorse turn on each other; Walt digs into heroin trafficking. Walt identifies a body that isn't Donna; Mathias
performs a "strange favor" that sets the stage for her emotional arc in the final season. Henry deals with a reservation overdose.
Depositions in Walt’s civil case go poorly; Walt tracks the Irish Mob.
A drug company CEO is kidnapped; Henry deals with a reservation overdose.