A murderer's shooting spree in Central Park prompts Briscoe and his new partner, Detective Eddie Green, to trace the murder weapon's origination; McCoy makes it his mission to punish the killer and the gun manufacturer.

Briscoe and Green believe a 10-year-old is responsible for a child's death, and McCoy wants her isolated to stop any future fatalities.

As Briscoe and Green investigate the shooting of judge, suspicion quickly points to her husband as the person who ordered the hit, but McCoy's case is hindered when she refuses to implicate her husband during the trial.

Jamie Ross returns as a defense attorney to represent a previous client who has key evidence concerning a prisoner on death row.

A frustrating investigation of a purse-snatching victim who was fatally shot leads to tension between Briscoe and Green over age and racial innuendoes. Briscoe notices his partner has developed a dangerous habit.

The investigation that follows the discovery of a comatose woman in her apartment leads to an unusual case involving murder and a possible frame-up, despite the prosecution having key DNA evidence to the contrary.

A taxi driver finds that his passenger is dead, leading the detectives to a case involving an insurance scam and Holocaust victims.

A patient is found beaten to death in a hospital lounge -- and the resulting case involves infidelity, Alzheimer's disease and a ladies' man.

After sanitation workers find a teenage boy's body, the investigation leads to a school bully who displays an avid interest in martial-arts weapons, and whose father bought the murder weapon.

The investigation of a schizophrenic woman's death leads to a case involving a homeless man and his right to refuse medication.

Bloodstains in an apartment that belonged to a young couple with a baby leads to the separated parents, each of whom claims that the other has the infant.

Briscoe and Green investigate the shooting of a best-selling mystery writer and the death of her accountant, with a love triangle as a possible motive for the crime.

The focus of the case returns to a politically influential family and, during the course of the trial, McCoy finds the powerful matriarch to be a formidable opponent.

The crossover starts on Law & Order: Special Victims Unit S01E15 Entitled (I).

After the bodies of two teens are found, the detectives trace their identities and learn that one of them had a sister who was traveling with the girls.

The murder of a stockbroker points to organized crime when a hired hit man kills the prime suspect.

The murder of a white teen-ager in Harlem seems like an open-and-shut case until two patrol officers are implicated in the crime.

The investigation into a helicopter bombing points to a victim's wife and her unconventional financial advisers.

The body of a teacher, suspected of having an affair, is found in a car trunk and the investigation involves husband and father-in-law, both of whom are psychiatrists.

A wealthy woman, who is a patron of the arts, is found dead in her apartment and the ensuing investigation leads to a suspect whose violence was spurred by a painting similar to the crime scene.

The discovery of a strangled prostitute's body leads to a case involving illegal immigrants and the events have an impact on a family.

Detectives Briscoe and Green probe the strangulation of a college coed who moonlighted as a stripper, and while they believe a pair of drug-dealing skinheads committed the murder, they struggle to determine the motive of the strip club owner who paid them for the hit. However, as they work their way up the ladder of complicity, the cops learn that the slaying is keyed to an insider trading scam that forces Assistant D.A. McCoy to connect a former porn star with a businessman.

The detectives' investigation into why a wealthy woman is comatose involves her husband, daughter and doctor.

The death of an elderly man trying to find who was responsible for the torture killing of his son in 1973 Chile leads to a high-level foreign colonel who is now in a Manhattan hospital.