A gun used in a gang-related double homicide is tied to a 12-year-old off duty police shooting and, eventually, a local pastor who's an outspoken critic of the LAPD. Meanwhile, Rusty finds out that his mother might be in danger.
The team searches for more clues after the Uzi from the shootings is found in the church, but the bad blood between Hickman and Tao reaches the boiling point. Meanwhile, more clues indicate that Rusty's mom may be in danger.
A major figure in the case is dead from a suspected overdose, but Tao thinks he was murdered. A major revelation casts Mark Hickman's motives in doubt, and a new suspect emerges on the day of the memorial service for the original victims.
The team has a new theory about the mysterious third gunman in the original shooting, which leads them to the discovery of who's dealing drugs out of the church. Meanwhile, the team discovers that Rusty's life has been threatened.
Sharon finally untangles a Gordian Knot of cocaine, religious zeal, jealousy, corn starch, nicknames and chop shop activities to identify the perpetrator of seven murders. Provenza ties the knot. Rusty faces his abuser.
The Major Crimes squad investigates the mysterious disappearance of a teenage girl, who vanished while volunteering at a homeless shelter, while Buzz cracks open the decades old cold case file on the murder of his father and uncle. Andy Flynn considers selling his house.
An undercover agent's death leads to the unit's investigation into drug overdoses involving a porn website that specializes in girls who just turned 18. Meanwhile, Rusty finds out that his biological mom is pregnant.
The Feds and Major Crimes search for a possible terrorist when they discover that an ISIS-styled beheading of an American military veteran is filmed in Los Angeles. Meanwhile, Sharon has an idea to help Buzz with a bad evidence video.
When Flynn looks into purchasing a new home and seeks input from Provenza and Buzz, an unexpected turn of events leads to a new investigation for Major Crimes. Meanwhile, Buzz continues to look into the circumstances surrounding his father's murder.
Det. Julio Sanchez's application to become a foster parent is jeopardized by his reactions to a particularly gruesome murder after the Major Crimes Division finds a chopped up body burned to bits in the barbecue pit of an L.A. Park.
When a pair of British tourists get attacked on their second honeymoon during a Venice Beach robbery, L.A.'s twenty billion dollar tourist industry is threatened by an English journalist riding their tragedy to a career high. Meanwhile, Rusty's biological mother tries to make peace with him over her pregnancy.
After a shootout in a tow yard leaves three people dead, Major Crimes must scramble to find a disturbed man with a bag full of guns and a long list of grievances before he kills again. Meanwhile, Rusty pushes 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.
When a jogger takes a nasty fall down the steps of L.A.'s storied Greek Theatre, Major Crimes finds itself investigating a divorce attorney with a lot of angry clients, and Lt. Tao goes undercover in the world of college age hookers. Meanwhile, Buzz connects his partials to a complete print, and learns the identity of one suspect.
While investigating a murder that has personal implications for Sanchez, the squad uncovers a much larger criminal operation. Meanwhile, Buzz comes face to face with someone that may have been present at his father's murder.
In attempting to clear up lose ends from their investigation of a gang of White Supremacists, Major Crimes detectives audit the trial of serial killer Dwight Darnell, and end up facing their most deadly case ever while Rusty's psychologist, Dr. Joe, faces an unexpected confrontation that leaves his life in jeopardy.
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.
Major Crimes hurtles forward towards the mysterious and elusive mastermind in the Dwight Darnell murders while Buzz and Rusty's investigation into the murder of Buzz's father comes to an unexpected end.