Arch Tatum is feeling the full weight of his 24 years on the force as he faces the contempt of his rookie partner, Bentley, who wants him to retire and make way for the next generation.
Members of the Serbian community are being gunned down and the police have few leads. Sgt. Wilson decides to use officer Joe Basic, an ethnic Slav, in an undercover situation. Joe learns his father Andrea is a possible target.
Joe Benton is taken off the surveillance squad after being involved in too many stakeouts that ended violently, so Sgt. Barrett drafts him for his narcotics squad investigating the "Mexican Connection."
Sergeant King Sherman endangers the public and the SWAT team he commands while preparing for his Lieutenant exams. His wife convinces him he'll pass his orals if he shows confidence in his leadership skills by projecting total authority.
IA Det. Sgt. Stiles investigates an indecent exposure charge against a veteran officer, resulting in the officer's dismissal. Months later, the exposure complainant confesses to a years-old murder, and subsequently raises doubt on his original testimony.
Det. John Darrin has to keep his primary witness to the restaurant shooting alive, while searching for his Chinese gang snitch, who has been snatched by a rival gang.
Detectives Grosser and Hyland know a big hotel heist is about to happen. They know who's involved, but they don't know which hotel or how to catch the thieves red-handed.
While breaking in new partner Ron Cruz, narcotics Det. Frank Dolan is drawn by a drug-related murder into pursuing a drug kingpin from out-of-town, who may be attempting to muscle his way into the local market.
Detectives Gordy and Ballard go undercover in a white-supremacist gun club to bust a paranoid gun collector who specializes in illegal military munitions.
Det. Bert Jameson has a new partner, Lew Reeves, and Lew's vicious cold complicates their efforts to solve armed pharmacy robberies and to catch the chopper rider who holds up taverns.
