Four family members are killed in their home - innocent victims in an attempted execution of a trial witness, all because the killer went to the wrong address.
Brenda and her team step into the delicate kidnapping case of a real estate mogul accused of fraud, which is complicated by frozen assets, an FBI case, obnoxious relatives, and a victim who may not be victimized.
When Sergeant Gabriel wounds an unarmed suspect, Brenda finds herself at odds with the FID Captain - a woman who is as single-minded and as intense as she is - jockeying for position and Gabriel's career.
Special agent Howard asks Brenda for Major Crimes' help in finding a "missing person;" however, when that person turns out to be a murdered drug dealer-turned FBI informant, the sparks begin to fly.
A reformed former convict is shot and killed outside a community center in gang territory. The team tries to solve the crime while Brenda tries to assure a public that has grown wary and skeptical of police cooperation.
Brenda deals with a psychotic wannabe detective who holds the keys to her case involving the murder of a pick-up artist. Unfortunately, he also holds her evidence and Chief Pope's career in his delusional hands.
Two officers are shot and killed in the line of duty; however, Captain Raydor's internal investigation could jeopardize Major Crimes' chances of finding the killers.
Brenda works with a retired detective on a case involving an accused killer who is murdered, but they clash because Brenda wants to find the killer's killer while the detective is more concerned about closure for the killer's victims.
When a confessed killer gets an important detail of the murder wrong during his allocution, Brenda suspects that he may be covering for his schizophrenic son. Meanwhile, Brenda gets a visit from her mother and teenage niece.
A cooler containing a body over three years dead comes to Major Crimes, leading Brenda to consider four hostile suspects. Meanwhile, Brenda's niece outstays her welcome with Brenda and Fritz.
Brenda uses her niece Charlie without her knowledge to uncover a motive after a schoolyard shooter kills one teenager and leaves another seriously wounded.
Texas authorities help Major Crimes catch a serial killer, but will Brenda allow the killer to be extradited to Texas to face the death penalty? Meanwhile back at home, she must decide whether Charlie can stay and live with Fritz and her.
When the younger brother of a gang leader and two other gang members are killed, Major Crimes suspects that they are victims in a gang war; however, when a stolen ATM card is recovered at the scene of the crime, a new motive emerges.
Major Crimes runs into a problem when it is forced to reopen an old murder case and discovers that the detective who closed it (Provenza's ex-partner) had a sex change and is now a woman.
Tension between Captain Raydor and Major Crimes escalates as Chief Pope asks Brenda to discretely investigate the abuse of one of Raydor's detectives. Meanwhile, Fritz has news that could change his and Brenda's life together.
