From nbc.com:
"Filmed entirely on location in New York, the realistic program looks at crime and justice from a dual perspective. In the first half-hour, Detective Cyrus Lupo (Jeremy Sisto) and his new partner, Detective Kevin Bernard (Anthony Anderson), investigate crimes and apprehend suspects under the supervision of their precinct lieutenant, Anita Van Buren (S. Epatha Merkerson). In the second half-hour, the focus shifts to the criminal courts, as Chief Assistant District Attorney Michael Cutter (Linus Roache) and the Executive Assistant District Attorney Connie Rubirosa (Alana De La Garza) work within a complicated justice system to prosecute the accused under the guidance of the newly appointed District Attorney Jack McCoy (Sam Waterston).

Some cases may be simple, but most are multi-faceted. The investigations are challenging, prosecutions are complicated, and decisions about legal procedures and plea-bargaining are vexing. In the arduous and complex process of determining guilt and innocence, lives often hang in the balance."

A culture of street fighting leaves one man dead and his family and friends wanting revenge.

The detectives investigate a murder and their only witnesses are a group of mentally challenged people and the neighborhood drug dealers.

Kevin and Cyrus investigate the death of a 17 year old boy and find themselves in the world of an underground fundamentalist Mormon sect run by a polygamist leader.

The detectives investigate the circumstances surrounding a crane accident in New York.

A man on a New York City tour bus ends up dead and the investigation of his murder uncovers a web of political cover-ups.

A male prostitute turned writer turns up dead and the team learns that there is more to the story of Sweetie Ness.

The team investigates the case of a woman who was living a zero carbon lifestyle and turned up dead.

A couple of divorce attorneys are found murdered and the investigation uncovers a child slavery operation.

A man involved in a class action lawsuit is found dead and the team finds that he isn't the only murder victim associated with the lawsuit.

A boy and his housekeeper are murdered and the team tries to find out who did it.

A man is found dead and the team suspects the Russian mob.

Three men are killed and the team tries to figure out what ties teh cases together.

The team investigates the bombing of an army recruiting center.

Kevin and Cyrus find an owner of a Christian charity has been murdered.

The girlfriend of a wealthy business man is found dead in Harlem.

The team investigates the death of a journalist and discover new information about an espionage case involving a man serving jail time for spying on the Chinese.

The team finds it difficult to solve the murder of a television news anchor who was investigating fraud allegations against a billionaire Wall Street advisor.

An illegal immigrant is found beaten nearly to death and the team investigates.

After a firefighter and his wife are found dead, the DA and his team face a politically unpopular decision to prosecute another firefighter believed to have covered up his crime.

Michael and Connie prosecute a mentally disturbed woman for the deaths of two British researchers, but begin to suspect her brother may actually be responsible.

Michael must rely on the help of a paranoid schizophrenic serial killer in order to convict two of his associates for committing copycat murders.

Jack finds himself in a tricky situation when a murder investigation leads to a connection to the governor's wife and a possible scandal involving an open US Senate seat.

A young man turns up dead at a campus parking garage and a professor is the primary suspect. As the case unfolds, the team realizes that they need to prosecute a large number of the Bush administration.

Cyrus becomes personally involved with a victim connected to a murder case he and Kevin are investigating.

An abortion doctor is murdered while attending a church service and the team struggles with their personal feelings about the case.