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.

The investigation into Branch's death continues. Walt looks into a death at the old Japanese internment camp. Henry considers taking up where Hector left off.

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.

Walt moves on after a standoff with Barlow. A tourist is found dead in a luggage bag left behind a tour bus heading to the casino, causing more tension between Walt and Nighthorse. Henry looks to help an abused mother and her son.

Walt suspects a chain robbery when a late veterans husband is shot during a break in and a warehouse full of pharmaceuticals is robbed. The sheriffs department is scouting for new recruits.

A young Cheyenne girl is raped on the reservation, creating problems between the wildcatters at the oil rig workers and the Cheyenne people. Vic is evicted from her home, forcing her to move in with Cady.

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 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.

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.