Turcotte blames himself for not saving the life of a B-movie actress (Virginia Madsen), while Stevens and Smith investigate the director (Howard Hesseman) with whom she spent the night.
Homeowners find a corpse hidden in a basement wall, prompting detectives to investigate a black fraternity that occupied the house 20 years earlier.
Bank robbers attempting to flee the scene end up at a local shopping mall and take several hostages, including Teresa.
Detectives investigate a murder at the police academy after a recruit finds a drowned classmate; robbers masquerade as police officers.
Fresh out of rehabilitation, McNorris prosecutes accused cop killer Sabrina Fithian (Rebecca De Mornay); Detective Pierce's testimony raises the specter of police corruption.
Investigators hunt for a pair of thieves (Kelly Hu, Rebecca De Mornay) who have gunned down their fellow officers.
Internal Affairs detective Trumper reopens the investigation into the death of detective Stevens' daughter; officer Hechler searches for a kidnapped baby.
DDA McNorris awakes from a drunken night on the town to find his car smashed and covered with blood; Turcotte and Hechler investigate a possible kidnapping.
Bobby "fearless" Smith faces demons from his past as he investigates the shooting death of a small-time drug dealer.
Shooters ambush and kill two police officers after receiving a tip from someone inside the precinct; Hechler turns to Andrea for help in finding the traitor.
A convicted murderer holds a police officer hostage in order to get a stay of execution from the governor.
Using Turcotte as a decoy, detectives set a trap for a trio of killers who prey on families while they sleep.
A suspect's throat is cut at the police station after he is implicated in a drug heist at a methamphetamine-laboratory explosion.
While investigating the bludgeoning death of a homeless man, detectives stumble upon two filmmakers (Neil Patrick Harris, Christopher Gorham) who pay vagrants to fight.
A teenager is dragged from her mountain home, and detectives are forced to rely upon the eye-witness account of a psychotic man who behaves like a coyote.
Deputy D.A. McNorris obstructs justice to protect a murder suspect, the son of a Hollywood producer who can help further his career.
The detectives discover that a fatal car accident may have been engineered by an insurance-fraud ring.
When a robbery at a sporting goods store turns into a hostage stand-off, Hechler enters the store disguised as a paramedic to assess the situation.
Smith vows to protect a 10-year-old girl from the vengeful wrath of a Russian mob boss; officers question why a body fell from the sky into a hot tub.
Burglars kidnap Teresa, demanding that the paramedic save the life of a comrade; Turcotte and Hechler patrol the streets on Halloween looking for pumpkin pilferers.
Tipped off by a third-strike felon hoping to avoid life imprisonment, detectives Stevens and Smith end a 26-year manhunt for the cop-killing Chimera.
Deputy DA David McNorris seeks to convict a defense lawyer of murder; detectives question the suspect's unstable brother; a veteran officer suggests planting evidence.
Detectives Stevens and Smith investigate a murder overheard by a telemarketer making random calls; Deputy DA McNorris juggles a morning tryst with Andrea and a surprise visit from his wife (Kelly Rowan).
A teenage girl is killed during a drive-by shooting. With Donnie Wahlberg, Mykelti Williamson and Jason Gedrick.