In the sixth season premiere, a man is murdered while taking pictures of the stars from his balcony. The squad suspects the crime is somehow connected to the woman with whom he was having an affair, but their investigation is hindered not only by a missing murder weapon, but the difficult adjustment of moving their offices into a new building.

Captain Raydor (recurring guest star MARY McDONNELL Battlestar Galatica) accompanies Brenda on an investigation involving the disappearance of a nanny working for close friends of the mayor. Meanwhile, Raydor's real purpose in taking part in the investigation could have big career implications for Brenda.

While investigating a suspicious suicide, the squad wades into a nasty child-custody dispute between a dying man and his meth-addicted ex-wife. Meanwhile, Pope applies for the police chief job, but Brenda might have something to say about whether or not he gets it.

Provenza once again finds himself in a professionally embarrassing situation when he discovers a dead body in the condo of a flight attendant he picked up while extraditing a prisoner.

At the request of Detective Mikki Mendoza (recurring guest star PAOLA TURBAY The Secret Life of the American Teenager, Cane), the squad becomes involved in investigating a series of brutal murders that indicate a Mexican drug cartel may have moved into the city.

After a parole board member is viciously murdered during a panicked phone call with Sgt. Gabriel, Pope announces an overreaching plan to boost the police department's image. His plan, however, hinges on Brenda first being able to solve the crime.

After a parole board member is viciously murdered during a panicked phone call with Sgt. Gabriel, Pope announces an overreaching plan to boost the police department's image. His plan, however, hinges on Brenda first being able to solve the crime.

In a case that could carry national security implications, three soldiers are gunned down outside a Los Angeles club two days after returning home from duty in Afghanistan. Brenda's investigation puts her on a collision course with Major Edward Dorset (guest star GARY COLE The Good Wife, Entourage, Desperate Housewives), a military liaison officer.

Brenda's squad picks up a case from Hollywood involving the brutal murder of an aspiring actress who made a date through an online service. But Brenda's investigation is forced to take second fiddle while she prepares for an interview with the mayor to become the next Chief of Police, a job Brenda is still not even sure she wants. Recurring guest star MARY McDONNELL appears as Captain Raydor.

The murder of two paramedics leads the LAPD and the FBI on separate investigations on a case that could be the precursor to a major terrorist attack. But Brenda fights to remain a step ahead, even though she's forced to work with the chief of the counterterrorism unit, who happens to be one of Brenda's fellow finalists for the job of Chief of Police.