A political operative and his girlfriend are found murdered, and detectives learn that the boyfriend was hired to collect voter signatures in a bid to put a controversial proposition back on the ballot.
A shooting rampage at a political event leaves a senator and six others dead, and Dekker and Rubirosa are at odds over how to handle the case. Elsewhere, TJ continues the hunt for his partner's killer.
Detectives Morales and Jaruszalski probe a bank robbery in which the robber used a photo of the teller's kidnapped son to abscond with the money, and a dangerous situation unfolds after a second bank is robbed in the same manner.
A high-speed car chase ends with police finding a dead woman and no driver, and the investigation leads detectives to the victim's jealous boyfriend and raises suspicions about her job as a city bookkeeper.
The stabbing of a Department of Public Works employee (Dan Kinsella) is probed. A group of gangbangers quickly become suspects, but the detectives have to adjust their approach when they discover the victim was investigating multiple unsolved murders.
A meth lab explodes and kills two children, prompting a search for the dealer's family. When detectives learn that the people responsible for the explosion are plotting something more destructive, the federal government becomes interested in the case.
A pro surfer is murdered after he returns home to care for his ailing mother. Winters and Jaruszalski believe there's more to the case than a robbery gone wrong, and Morales thinks that someone related to one of the suspects has additional information.
Dets. Rex Winters (Skeet Ulrich) and Tomas "TJ" Jaruszalski (Corey Stoll) investigate robberies committed at the homes of young Hollywood stars, ending in a shocking crime executed at the residence of a young starlet and her stage mom in the debut of this procedural crime-drama series set in L.A.