Bobby Soto

After a hero fire chief is found dead, Riley and Walker must break through his squad's closed ranks to uncover the truth. When the defense presents a plausible alternate timeline of events, Price and Maroun must fight to win the jury over.

The Lightman Group is hired to examine police profiling techniques in the wake of an incident involving Wallowski (guest star Monique Curnen), and Internal Affairs attempts to leverage Lightman’s relationship with Wallowski to get him to incriminate her.

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.

The team reopens the 1998 case of a murdered teenage girl after her father is arrested for savagely beating the teen's stepsister, who is just 3 years old. The father is, at first, the team's primary suspect for the decade-old murder, but they soon uncover that the victim had run off with a neo-Nazi ex-con shortly before her slaying.

A year after the tragic car crash, the family is forced to come together for Justin's homecoming party; Kitty's life becomes a taboo subject.

The Walkers attend a launch party for Luc's advertising campaign; Kevin must deal with a runaway juvenile delinquent; Nora receives a job offer.