While the Major Crimes unit investigates a complicated gangland shooting, Det. Amy Sykes finds she must protect the identify of a witness capable of identifying the killer. Rusty struggles with how to manage newly gained information on the Alice case, and Lt. Flynn works to gain the courage to take his relationship with Captain Raydor to the next level.

After a shooting leaves two LA police officers dead, the Major Crimes unit must work with the Deputy Chief of the LAPD Special Operations Bureau, Fritz Howard, to piece together a high stakes case involving a fugitive witness. Meanwhile, Rusty works with the team on the case in order to secretly gather more background information to support his own, journalistic investigation into the life of the girl who called herself Alice Herrera..

New information prompts the re-opening of an old kidnapping investigation, forcing Captain Raydor and her Major Crimes Division into partnership with a potentially corrupt FBI agent. Rusty has a major breakthrough in his investigation on Alice Herrera.

The division investigates an online video of a bloodied, half-naked man walking down a street with a gun. Meanwhile, Rusty at last finds Alice Herrera's brother and reaches out to Sharon for help.

After Major Crimes identifies a murder victim as the son of State Superior Court Judge known for being tough on criminals, the squad hunts through her current case load, which involves an Aryan motorcycle gang and, much to their surprise, connected to the disappearance of a thirteen-year-old boy.

With Flynn on desk duty as he recovers from injuries, Sharon and the team investigate the murder of a fugitive diamond thief whose body was found by his bail bondsmen. Rusty is put in a tight spot when his relationship with Slider is discovered by Marianna's brother.

A professional baseball pitcher's daughter goes missing, and the Major Crimes team's investigation leads them to the very limits of the justice system. Rusty is put in an extremely awkward position as Slider approaches the last phase of his trial.

Sharon and the team track an unhinged killer making his own film with his victims as the stars as a new romance takes wing.

A young woman and her 3-year-old son are shot to death while driving through gang territory in the wrong colored car, and the gun used in the murder is quickly connected to the most troubling series of unsolved homicides in LAPD history. As Captain Sharon Raydor and the rest of her division attempt to solve the mystery, Amy Sykes begins an uneasy alliance with a disgraced former LAPD detective with a novel theory and a corrupt past.

Information pours in about past victims; Lt. Cooper and Amy Sykes are caught in an unexpected gun fight; Sharon makes her way toward the truth.

The seven murders are finally tied together and the number of suspects is narrowed down to three. Mark Hickman attempts to deal the truth about his past. Provenza and Patrice sort out their wedding issues.

The squad investigates the disappearance of a teenage girl who vanished while volunteering at a homeless shelter; Buzz opens the cold case file on the murder of his father and uncle; Andy Flynn considers selling his house.

After an ISIS inspired attack against a member of the US Armed Services, the FBI asks for Captain Raydor’s help in finding a terrorist, joining the Bureau in a race against the clock before the terrorist can strike again.

A methodical and tightly wound former engineer who lost everything aims to make a bold statement against those who harmed him. Rusty bumps up against LAPD policy in an attempt to find more evidence related to the murder of Buzz’s father and uncle.

Lts. Andy Flynn and Mike Tao delve into the mysterious overdose of a young Hollywood star and the trail of emotional destruction he left in his wake, while Rusty finally comes to a conclusion about how to handle the pregnancy of his biological mother.

The Major Crimes unit continues to investigate the conspiracy behind Dwight Darnell’s murders and his links to the Zyklon-Brotherhood. Sharon Raydor, disturbed by her own reactions to the case, seeks penance in the Ritual of Confession.

The Major Crimes unit gets closer to the elusive mastermind behind the Dwight Darnell murders; Buzz and Rusty's investigation into the murder of Buzz's father comes to an end.

When Captain Sharon Raydor and the Major Crimes Division investigate the murder of a young woman found in the LA River, their case is not only impeded by a secretive PI working for a tech industry millionaire, but also by Deputy Chief Winnie Davis, who regards Sharon as competition for the promotion to Assistant Chief of the LAPD.

When Major Crimes discovers a young one-man-geek squad in the middle of his Atwater living room with his throat cut, suspicions swirl around his roommate and some unwitting customers, all of whom he was blackmailing.

A murder investigation turns explosive while Captain Sharon Raydor duels with Deputy Chief Winnie Davis (guest star Camryn Manheim) for control of her case as she and her squad try to determine if they are dealing with a terrorist. Meanwhile, Rusty gets some alarming news from Gus.

After discovering the identity of the bomber her division has been searching for, Sharon Raydor and the Major Crimes squad struggle to determine his next target.

As the case of the St. Joseph's Three leads to its unexpected conclusion, Sharon attempts to balance the case, the arrival of her family and her fast approaching wedding to Lt. Andy Flynn.

When a well-known attorney, celebrated for her defense of oppressed women is found dead, there are no shortage of high-profile suspects, including her son, her ex-husband, a film director whose career she helped destroy and a former football player whose sports bars/restaurant chain, Tackles, features scantily clad women. Meanwhile, Rusty and Gus confront issues in their relationship.

As the squad investigates the mysterious death of a second woman related to the Tackles case, and a new theory materializes, Sharon faces a health setback. Meanwhile, Gus reacts unexpectedly to Rusty's partial solution to their ongoing relationship problems.

While working two seemingly connected murders, the division suddenly uncovers a series of sexual assaults against servers from Tackles. As a new theory about the killer gathers steam, however, an unexpected twist throws Major Crimes off course and Sharon Raydor off- balance.

Sharon Raydor must make decisions related to her ongoing health problems while arriving at the solution of a series of murders and sexual assaults.

A surprise death in the law enforcement community seems to be the work of escaped serial killer, Phillip Stroh. Ricky Raydor helps the division with a difficult search for a Mr. and Ms. Bechtal, and Emily Raydor offers Rusty some sound advice.

Unable to locate Stroh in the present, the squad looks for answers in his distant past, hunting for the former Ms. Bechtal. Meanwhile, the squad struggles with Chief Mason, and Rusty grows frustrated with forced proximity to Gus.

In the penultimate episode, Phillip Stroh and his young British accomplice edge closer and closer to their end game, while Lt. Provenza continues to push Asst. Chief Leo Mason into pouring more resources into the case. Rusty digs up an important clue.

In the series finale, Lt. Tao, is stuck in a room with a potential bomb. Provenza finally identifies the real Ms. Bechtal, and Major Crimes comes face-to-face for the very last time with Phillip Stroh.