Season 4

10 episodes · 2015

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.

Walt is forced to split his focus between new evidence in a personal case, and the murder of a caretaker at a former Japanese internment camp.

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 the husband of a former soldier is assaulted during an apparent robbery, Walt is drawn into an emotionally charged investigation.

A young Native American girl is raped on the reservation, which sparks new, volatile tensions between local oil rig workers and the Cheyenne people.

A highway robbery sets off an investigation into a strange relationship, while Walt struggles to let go of the past.

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.

Henry's attempt at justice backfires, resulting in new problems for him and a new investigation for Walt.

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