Major Crimes discovers that an apparent murder-suicide may actually be a double homicide, and Rusty receives a frightening anonymous letter connected to his upcoming testimony.
A car chase ends with the discovery of a driver covered in dried blood, but is he the victim of tough circumstances or connected to a Mexican drug cartel?
Flynn and Provenza end up in hot water when a witness in their care becomes the main suspect in a murder. Raydor and the rest of the team become curious about Rusty's new study partner Kris.
While Major Crimes investigates the murder of an ex-con drug dealing identity thief, Sharon's long-absent husband makes an unexpected return from Las Vegas.
A prestigious swim coach claims to have shot and killed a Hispanic intruder in his house, but Major Crimes soon discovers a shocking connection between the two men as well as a number of other more disturbing crimes.
After a landlord is killed, Major Crimes' investigation quickly focuses on his elderly tenants, who all worked together on a 1970s detective TV program.
Major Crimes needs help from the Feds when they discover that the victim in a mob-related murder was an FBI informant, a case that hits home especially hard for Rusty.
Major Crimes searches for a high school drug dealer after two teens die from drugs laced with cyanide, and Rusty weighs his new living options after he is busted.
A police officer becomes the prime suspect when the serial rapist who victimized his daughter is killed, and Rusty meets with a therapist who can also teach him a few lessons in chess.
A man is killed over a bad investment, but Major Crimes finds several possible suspects. Meanwhile DDA Rios comes to blows again with Sharon and Rusty.
Major Crimes spends their Christmas vacations investigating the murder of a baseball scout, while Rusty's therapist asks him some tough questions about his mom.
A prominent politician's son is murdered in a gang neighborhood, which sparks a new interest in an earlier crime. Meanwhile, Rusty suddenly takes an interest in why each detective joined the squad.
The son in a father/son used car dealership is killed in a car explosion on the lot, and Rusty tries to pass his field training for his undercover assignment.