Walt's attention is divided between the discovery of new evidence in a personal case and the investigation into the murder of a caretaker at a former Japanese internment camp.
Cady makes a shocking discovery; at the same time, Walt's investigation of Nighthorse heats up, but not in the way he was hoping.
Walt's troubles with Nighthorse are further complicated by the discovery of a body in the luggage of a tour bus. Meanwhile, Henry makes a bold move to help a mother and son.
Walt finds himself drawn into an emotionally charged investigation involving an assault during an apparent robbery of a man married to a former soldier.
Volatile tensions erupt between local oil rig workers and the Cheyenne people when a young Native American girl is raped on the reservation.
Walt struggles to let go of the past as he and the team investigate a highway robbery perpetrated by people involved in a strange relationship.
A former suspect in a rape case ends up dead in another county, which strikes Walt and Vic as more than a coincidence.
Henry is troubled with new problems after his attempt at justice backfires, resulting in a new investigation for Walt.
In the Season 4 finale, the line between justice and the law gets even blurrier for Henry and Walt as their hunt for a killer intensifies.
The son of a tough judge is murdered. The Major Crimes staffers comb through the judge's current caseload for clues, leading them to a motorcycle gang that might be connected to the vanishing of a 13-year-old boy.moreless
The division investigates an online video of a bloodied, half-naked man walking down a street with a gun. Meanwhile, Rusty learns that finding Alice's brother doesn't bring the closure he thought it would.moreless
The team must work with an overbearing FBI agent when new evidence in a kidnapping case comes to light. Rusty meets someone important to his investigation. Raydor and Flynn give Taylor some surprising news.moreless
Two officers are killed in a shooting, putting the unit together with deputy chief Fritz Howard (Jon Tenney) to find the sole witness and crack the case. Meanwhile, Rusty secretly gathers information to support his Alice investigation.moreless
The team identifies their murder victim as a rapist with a long list of enemies. Meanwhile, Provenza's relationship with Patrice moves forward.
A complex gangland shooting is investigated, and Det. Amy Sykes focuses on protecting the identity of a witness. Meanwhile, Rusty tries to manage new information about a case, and Flynn works up courage to take his relationship to the next level.moreless
Buzz's first night on duty as a reserve officer includes his discovery of a murder victim. The team must contend with a high strung host of characters in a lavish wedding. Rusty gets help in his investigation.moreless
A model's murder is caught on camera. Rusty's investigation into Alice's identity complicates matters for the prosecution.
A car chase results in a strange discovery. Rusty decides to try and identify a murder victim.
A double homicide coincides with Sanchez's return to the team.
Phillip Stroh is back and demands a new deal in exchange for information regarding a current, horrific murder.
Sanchez is scrutinized when his mother's caregiver is murdered. Elsewhere, Jack arrives at Sharon's condo and acts recklessly, forcing Rusty to take action.
Flynn tries to negotiate with a man holding on to the ledge of a bridge, only to discover horrifying information about the jumper. Meanwhile, old wounds surface when Rusty prepares an impact statement.moreless
The team investigates a bank robbery connected to the death of two Santas. Raydor's children visit and uncover unsettling news about their dad.
A gang member is acquitted and released from custody, leading to criminal complications. Meanwhile, Rusty's crush visits the station.
A former teen star is found beaten to death on Skid Row. Flynn's daughter is under the impression he and Raydor are in a serious relationship.
Two teens are attacked at a party. Raydor worries when Rusty wants to delay starting college.
The body of a young woman is found in a storm drain. Cpt Raydor's adoption of Rusty is made official.
Young women begin to vanish from a popular nightclub, resulting in a territorial war between Major Crimes and the Special Operations Bureau. Meanwhile, Fritz Howard deals with poor health, and Rusty's mother struggles with personal issues.moreless
Walt seeks closure for his wife's murder and Henry's case. Meanwhile, Branch is suspended but continues to investigate Jacob Nighthorse.
The entire team works overtime to solve the murder of a man running illicit computer site. Meanwhile, Sharon is shocked at her son Ricky's strong opposition to her adopting Rusty.