A down-on-his-luck ad executive becomes the prime suspect when his wife and son are killed, and his daughter wounded on a night that he claims was spent drinking.

A young man who claims to have helped a murdered young man change a flat tire is first the cops' primary suspect, then the prosecutors' chief witness.

A defendant refuses to allow his lawyer to raise the issue of insanity, this complicating matters for the brother who turned him in with hopes of securing medical treatment for him.

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.

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

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 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.

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

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

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

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.

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

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 murder investigation uncovers deliberately faulty forensics in the wrongful conviction of two men 12 years earlier in the case that paved the way for Van Buren's promotion.

When a building is set ablaze, a girl must be identified despite her fatal burns. Through further investigation, it turns out that an extreme environmentalist group struck the match...

When a girl's parents frantically search for her, Briscoe and Green see that the girl's belongings were packed up in her apartment. They learn that the girl had been seeing a married man -- her boss. When the boss is brought up on charges, his wife sheds some new evidence.

A tenement building explodes and the lone victim is Joseph Haden. The building was rent controlled and there had been a tenant strike, so the police initially suspect arson. But the landlord doesn't have insurance, ruling out their arson theory, and the medical examiner discovers that Haden's neck was broken and he was tied up before the explosion happened. Trying to figure out Haden is even more difficult. He didn't appear to have a family or a girlfriend and never got any substantial mail. He worked at the Jiffy Job service station making minimum wage, yet had $90,000 in the bank. Briscoe and Green do some more digging and find out that Haden was using an alias, and his real name was Yusuf Haddad.

A struggling actress is murdered in an apparent robbery-homicide where a video tape, made by a couple touring the city sold to a local news station, shows three suspects loading the stolen property into an SUV. They are charged with felony murder, a capital crime, and causes unrest with Southerlyn surrounding the death penalty.

The bludgeoning of a luxury sports car dealer leads the detectives to a mentally challenged man and his girlfriend who is extremely attractive and whose expensive tastes leads her to be equally manipulative.

The murder of an admissions director of a private school leads the detectives to investigate a pair of angry parents whose children were denied admission, but then set their sights on the headmaster when they discover that the victim was about to go public with the denied admissions.

Briscoe and Green catch four murders and a kidnapping on the same day, and get handed confessions in each case.

The investigation into the carjacking of a vehicle containing vials of a deadly virus leads the detectives on a search for the first person infected with the virus and a biochemist whose sinister motivations were driven by passion.

The owner of a clothing company with alien immigrant workers is found murdered which sends the detectives on a search for an unidentified evening caller whose girlfriend, also a worker in the factory, recently gave birth. Upon discovery that the victim was also the baby's father, the boyfriend is arrested with the motive being an office affair until the victim's widow discloses that it was a surrogate arrangement.

A decorated Gulf War veteran grief-stricken over the Afghanistan combat death of his son murders an anti-war protester, claiming at trial that he acted under extreme emotional distress.

The investigation into a bar room brawl fatality reveals a detective's decades-old vendetta against a petty criminal turned murderer who was falsely accused of one murder after evading conviction on another.

When a woman abandoned by her firefighter husband for his partner's widow is threatened with also losing custody of her children, she murders her romantic rival, claiming that 9/11 post-traumatic stress syndrome prompted her actions.

McCoy prosecutes a famous basketball star accused of murdering a man who was suing him because of a massive brawl between players and fans.

When Fontana and Falco investigate an arson which caused the death of a firefighter, they discover a murder weapon tied to a nine year old murder and a hate crime in which the defendent attempts to have his case dismissed because he became a born again Christian after committing the murder.

The bombing death of a husband set to remove the feeding tube of his wife, who's in a persistent vegetative state, focuses the investigation on the protesters.