The investigation into a girl's death reveals secrets the adoptive family was desperately trying to hide.

Detectives discover a shocking twist involving unlikely suspects when they investigate the brutal beating of a black man dumped near the highway.

The investigation into how a teen got wounded leads to a case involving a young woman's murder and a drug operation.

After a child in a day-care center dies of a virus, Briscoe and Curtis try to find the source of the infection, leading to a case involving an extramarital affair, embezzlement and a drug manufacturer.

After the detectives find a murdered postman and a woman who was left for dead in her apartment, the investigation leads to a serial killer and a surprise.

The murder of an employee at a fertility clinic leads to a case involving a dead man's first and second wives.

The killing of a professional escort leads to a case involving the relationships between a young man and two older women.

The murder of a corrections officer leads detectives to a women's prison where a guard was linked to an inmate Carmichael put away on drug charges and a confrontation with defense attorney Danielle Melnick.

The double murder of a wealthy man and his daughter leads the detectives to the wife and stepmother of the deceased. However, Canada's objection to the death penalty hampers McCoy and Carmichael in seeking crucial evidence for obtaining a conviction.

Evidence points the detectives in the direction of a fascist youth gathering after the brutal beating and murder of a high school girl.

Briscoe and Curtis reopen a case that was closed in the '60s when a vehicle is dredged from the Hudson River containing the remains of a murdered man.

Briscoe and Curtis probe the murder of a popular Harlem community leader while McCoy and Carmichael struggle to prevent a chaotic situation.

Briscoe and Curtis race against time to find the killer of a parolee before two bounty hunters find the suspected murderer.

When Briscoe and Curtis discover that a high-level federal official found murdered was recently transferred from Baltimore, they re-team with Baltimore homicide detectives. The joint investigation reveals that the victim was involved in an affair with a high-level government official whose career will be destroyed if it becomes public. The independent counsel summons McCoy and Ed Danvers to Washington to demand McCoy reveal his source or be jailed for contempt.

This crossover continues on Homicide: Life on the Street S07E15 Sideshow (II).

After a teen is found dead in the emergency room, the investigation leads to a case involving a religious ritual and a defendant who claims that the action taken was dictated by a saint's voice.

Briscoe and Curtis investigate a possible homicide while probing the assault of a retired divorce attorney.

Briscoe and Curtis investigate the murder of a police officer who was shot while on an undercover stakeout.

The investigation into the shooting of a newspaper columnist leads to a murder case from two decades earlier and involves a suspect who at that time had been a juvenile.

After a philosophy professor is pushed in front of a subway and killed, the investigation leads to a suspect who, following a divorce, changed his identity and disappeared with his daughters.

The death of a corporate mogul caused by an overdose of a sexual performance-enhancing drug leads to a case with a witness that puts Curtis in a compromising position.

The murder of an audio installation salesman leads the detectives to a case with connections to the mafia.

A coed's killing leads to a case involving the deceased's relationship with a professor and two male students who vouch for each other's whereabouts on the night of the murder.

A shootout between a motorist and the police leads to the discovery of a gruesome Russian mob killing --- and a traumatized boy who was an eyewitness to the murder.

McCoy and Carmichael risk violating the civil liberties of witnesses when they are forced to jail them in order to safely continue their investigation.

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.

The murder of a drug-laden teen presents the detectives with a host of suspects from her wealthy family.

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.

After a disabled boy dies of smoke inhalation during a fire, his parents and a building tenant with a history of ""accidental"" fires become suspects.

After a woman's body is found in a subway station, a suspect is arrested, but the resulting case concerns the lack of medication supplied him while in prison.

The detectives investigate the murder of a young violinist whose fellow musicians resented her rapid rise to fame, in a trial that results in threats exchanged between Lewin and the presiding judge who has a history of bias against McCoy.

After a prisoner's murder, an investigation leads to a suspect, but the question arises if he acted on his own or on orders from within the prison.

The murder of a storeowner leads to a case where the suspect flees to Israel and may be protected from extradition by Israel's Law of Return.

A former Black Panther, accused of murdering a Caucasian police officer, questions Green's integrity amidst a politically charged trial.

Under pressure from the department's top brass, a 20-year-old murder case, initally investigated by Briscoe's now retired boss, is reopened involving the slaying of a teen-age girl with the spoiled son of a politically connected family as the prime suspect.

The killing of a school-hockey coach leads to a case in which the defendant claims that he committed the crime while suffering from ""sports rage.""

An assistant manager at a jewelers discovers four bodies at the store, leading to the prosecution of an amiable murder suspect who insists on representing himself, and winning the admiration of a female juror.

The death of a lab technician and the abduction of 17 infected monkeys lead to a trial involving the treatment of research animals.

Following "wilding incidents" in Central Park, a woman's body is found in the lake and the suspects include the deceased's wealthy husband.

The beating death of a restaurant owner leads Briscoe and Green to thrill-seeking teenagers; McCoy and Lewin are forced to decide how young is too young for the death penalty.

When a gay man is beaten to death during the abduction of his adopted infant son, Detectives Briscoe and Green suspect that ransom from the murder victim's wealthy partner may have been the motive for the crime. But as more is learned about the child's birth mother and homophobic biological father, Assistant D.A.'s McCoy and Carmichael find that what appeared to be a botched kidnapping might be more accurately prosecuted as a hate crime.

When a pregnant loan officer is found in the trunk of her car with fatal gunshot wounds, Detectives Briscoe and Green at first suspect a carjacking or the woman's fiance and co-worker. But as the woman's premature baby clings to life in the hospital, the investigation turns to professional basketball player Cris Cody, whose ties to the dead woman may extend beyond the loans she approved for him--and may include reason for him to want her and her unborn child dead.

When a participant in a TV reality show is murdered, McCoy goes after the producers and network executives for deliberately fomenting hostility among the participants to boost the ratings. All too appropriately, the outcome of the case hinges on a videotape made by a hidden-camera.

When a woman is found strangled to death with a large quantity of the drug Ecstasy in her handbag, Detectives Briscoe and Green have difficulty gathering sufficient evidence for an indictment of their prime suspect, drug-dealer Francis 'Taz' Partell. But when they question one of his former associates, they discover new evidence indicating that Taz is responsible for the earlier murder of a bouncer in Bronx county.

When the dead body of Karen Hall, an investigator with the State Attorney General's Office Criminal Division, is found in a Manhattan river, Detectives Briscoe and Green find that her boss, Frank Conroy, had written off her disappearance as a random kidnapping from an Albany train station. But as more is learned about Conroy's controlling relationships -- with the dead woman, with his wife and with a long-term girlfriend -- he quickly becomes a suspect.

When a couple is found dead in their apartment, Detectives Briscoe and Green follow the trail of drugs and money, which leads to Caryn Wyman, the wife of a U.S. Army Major responsible for the country's anti-drug efforts in Colombia. Despite the evidence linking Caryn to the drugs, she is fearful of cooperating with the police--until A.D.A. McCoy convinces her and her husband that she has no choice but to risk her life to catch the killer.

When an hispanic male is found dead from a severe chest trauma, Detectives Briscoe and Green discover that he and two other illegal immigrants had been in a staged automobile accident. As evidence mounts linking numerous similar car crashes with the same employer, chiropractor, insurance adjuster, and lawyers, A.D.A.s McCoy and Carmichael must determine who is ultimately responsible for the man's death, from which so many others profited.

The murder of a prep school student points to a mystery woman who may have been extorting money from the victim's wealthy father.

Briscoe and Green discover a murdered businessman may have been the target of a well-known criminal , but the investigation stumbles when the FBI acts as the suspect's alibi.

Jamie Ross returns to defend a student accused in a mass school slaying.

An attempted murder of a tough Judge leads Briscoe and Green on a wild goose chase to track down the inimical criminal. When the perpetrator is found, Carmichael and McCoy have a difficult time making a case.

A woman's murder leads the police to discover the actual target was a reporter who did a story about improprieties in a recent senatorial election. Carmichael can't get the reporter to reveal her sources for a story that contains allegations that the vote was fixed and ballots tampered with, even though the reporter's life is at risk. Without the source, McCoy and Carmichael have a difficult time making a case against the Senator, who they believe has ties to the mob and ordered the hit on the reporter. The case hinges on 2000 missing ballots from the vote that were stolen by the mob. Once the ballots are found, there is a big court battle about whether or not the ballots should be counted. McCoy believes that the ballots will show Benton's motive for ordering the hit, but an appellate court won't allow it, so their case is virtually dead. In the end, McCoy is able to convince the reporter to reveal her source and have him testify against the senator.