A prominent film director becomes the main suspect in the stabbing death of his pregnant wife. D.D.A. Emma Rios questions Rusty about his testimony in the upcoming Stroh trial and voices her objection to Rusty remaining in Raydor's custody.
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.
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 joined the squad.
In the season finale, the Major Crimes unit draws closer to finding a dangerous serial killer. Rusty faces his biggest challenge yet when he bravely takes the stand against Phillip Stroh. Complicating the case further, the team goes head to head with Linda Rothman (guest star JERI RYAN - Body of Proof, Leverage, Boston Public, Star Trek: Voyager) a tough, powerful attorney who doesn't let morals stand in her way of winning a case. Recurring guest star JON TENNEY (The Closer) appears as Fritz Howard.