Vincent Hanna is a brilliant L.A. cop following the trail from a deadly armed robbery to a crew headed by master thief Neil McCauley. The trouble is, McCauley's expertise is at least equal to Hanna's.

Two young officers are marked for death after confiscating a small cache of money and firearms from the members of a notorious cartel during a routine traffic stop.

The series returns with more mysteries in season five as the squad must solve some of the most challenging homicides in America₂s second largest city. From searching for a missing teenage girl who vanished while helping the homeless, hunting down the killer of a potentially dirty cop, or following up on a beheading in an isolated corner of Los Angeles, the investigators attempt to return balance to the scales of justice.

The story of an inner-city Los Angeles police precinct where some of the cops aren't above breaking the rules or working against their associates to both keep the streets safe and their self-interests intact.

Los Angeles, 1949. Ruthless mob king Mickey Cohen runs the show in this town, reaping the ill-gotten gains from the drugs, guns, and if he has his way, every wire bet placed west of Chicago. And he does it all with the protection of not only his own paid goons, but also the police and the politicians who are under his control. It's enough to intimidate even the bravest, street-hardened cop, except for the small, secret crew of LAPD outsiders who come...

Jon Baker and Frank Ponch Poncherello have just joined the California Highway Patrol (CHP) in Los Angeles, but for very different reasons. Baker is a beaten-up former pro motorbiker trying to put his life and marriage back together. Poncherello is a cocky undercover Federal agent investigating a multi-million-dollar heist that may be an inside job-inside the CHP.

A gritty crime saga which follows the lives of an elite unit of the LA County Sheriff's Dept. and the state's most successful bank robbery crew as the outlaws plan a seemingly impossible heist on the Federal Reserve Bank.

The detectives in the LAPD's major crimes division are still reeling from the departure of Brenda Leigh Johnson and the realization that Captain Raydor is now in charge. Unlike Brenda, Raydor is determined to lead them with a more team-oriented approach, sharing the credit with the people with whom she works. Raydor's hardest job will be gaining the trust and confidence of her detectives, who aren't quick to forget her past, especially Provenza, who...

The LAPD is looking for a new chief and Will Pope thinks he has the inside track. He soon has an unexpected rival for the job: Brenda.

The Srike Team is dissolved and a new captain takes over the police department.