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When Councilman Halsey is robbed and his throat slashed, the investigation ties the public official to organized crime and conspiracy at the highest levels of city government.

The emergency-room death of a young woman may lead to a negligence charge for the hospital's chief of medicine.

A "self-defense'' subway shooting prompts legal chaos when questions arise about who the real victim is.

A mercy killer is responsible for assisted suicides that were first thought to be routine robbery-homicides.

A young woman's upstanding boyfriend is suspected of murdering her, but the lack of evidence forces Stone to take a brash tack.

A millionaire is robbed and murdered in a parking garage, but the robbery may just be a cover for the real motive.

A body in Central Park is the improbable link to a prostitution ring catering to the rich and famous.

A respected policeman is arrested after shooting a black Ivy League student, but it is later disclosed that the collegian had a sordid history.

An abusive lawyer who has fatally battered a girl is drawn into a deal that could lead to his conviction.

The commissioner of cultural affairs is arrested for the murder of a controversial artist, but Stone and Robinette suspect an art patron also is involved.

An African-American girl accuses a group of white policemen of raping her, but when the rape test turns out negative, Stone and Robinette suspect a hoax.

A two-faced anti-abortion advocate becomes a martyr when she is killed in the bombing of a clinic.

Greevey and Logan discover the body of a fellow officer during a homicide arrest; Stone finds evidence linking a slain officer to murder.

A celebrated local TV news reporter is gang-raped under puzzling circumstances, and prosecution of the defendants is hindered by a lack of concrete evidence.

Part 1 of 2. Stone prosecutes three men associated with an organized-crime family when they attack a Russian immigrant.

Part 2 of 2. When a bribery charge brings a member of an organized-crime family back to court, Stone brings the head of the family to justice.

Greevey and Logan's investigation of the shooting of two innocent children leads to a 14-year-old gunman and the people who hired him.

The detectives' probe of a felon's murder is hobbled by a cover-up to protect the killer; Stone has evidence to convict but faces a tough court opponent.

While Stone and Robinette believe they have an airtight murder case, Greevey and Logan dig deeper and find the victim's partner involved in a frame-up.

The detectives investigate the murder of a Lebanese drug smuggler who was killed while being transported to a courthouse in federal custody.

Stone prosecutes a man who employed extreme methods to find a desperately needed kidney for his daughter's transplant.

Capt. Cragen is implicated in an internal police scandal, and Stone reluctantly prosecutes him on bribery and corruption charges.