Brenda investigates the case of a female police officer who denied being a victim of spousal abuse prior to her husband being shot by a cop answering a domestic disturbance call. Mary... Full summary

Several old cases are reviewed after a crime lab used by the LAPD is discredited; Provenza's old partner comes out of retirement to help on a case they closed seven years ago.

The squad investigates the death of a 12-year-old boy whose body is found at a known gang party house; Fritz brings home a surprise for Brenda.

A woman is stabbed to death by someone wearing a ninja outfit; a detective arrives from El Paso, Texas, investigating a similar crime; Brenda's father comes to take her niece back to... Full summary

A shooting leaves one dead and one person critically injured; Brenda and Fritz fight over how to handle Charlie; Provenza makes a big life change.

A body stuffed inside a large box sends Brenda on a search for suspects; Brenda uses the case as a teaching tool for Gabriel; Charlie pulls a stunt that has Brenda and Fritz ready to... Full summary

Brenda reopens a murder investigation when the man who confessed gets the details of the crime wrong during his allocution; Brenda's mother arrives with her niece.

The squad investigates the murder of a man who was the lead suspect in the murder of two girls; the lead detective for the old case comes out of retirement to help the squad.

A shootout leaves two patrol officers and an 18-year-old boy dead; the Force Investigation Division becomes involved with the case.