When a Wall Street stockbroker turns up dead, sound evidence is hard to come by, and DA Jack McCoy is forced to make one of the most controversial arguments of his legal career.

Rick Devon’s (guest star Bradford Cover) body is found murdered in a park, and his death is automatically assumed to be drug related. Upon investigation, detectives Cyrus Lupo (Jeremy Sisto) and Kevin Bernard (Anthony Anderson) stumble upon a key in a nearby bathroom that could potentially have been left behind by the killer. Prints on the key lead the detectives to former felon, Diego Cardenas (guest star Carlos Leon), who has cleaned up his act and now works at a home for mentally challenged adults. After questioning Diego, the detectives discover a hidden relationship between the murder victim and another resident of the home, Pete Haynes (guest star Michael Rispoli). Rick and Pete’s relationship guides the detectives to uncover a painful family secret that could expose the killer. Epatha Merkerson, Sam Waterston, Linus Roache and Alana De La Garza also star.

The detectives discover much bigger secrets when investigating the death of a 17-year-old boy.

The detectives investigate the mystery of a falling construction crane in the city and that leads them to something much more sinister.

Bernard and Lupo are sent to upstate New York to find clues after a tourist is found murdered.

A well-known memoir writer is found dead in a community of male prostitutes.

E.A.D.A. Michael Cutter and A.D.A. Connie Rubirosa question a judge who seems mentally unfit to continue to uphold the law. To make matters worse, his clerk helps cover it up by sending him instant messages during the trial that makes him seem competent.

The murder of married laywers leads Detectives Lupo (Jeremy Sisto) and Bernard (Anthony Anderson) to a child slave trade ring.

A plaintiff in a class-action suit against an airline is murdered.

Harold Foley and his wife Joyce, both biologists at a local university, come home to find their son and their housekeeper murdered.

A murdered truck driver has ties to the Russian mob

A police officer who's been having financial problems takes hostages at gunpoint and then gets killed by fellow officers. He has the keys to an apartment that isn't his primary residence; detectives Lupo and Bernard search the apartment and find a dead body and valuable stolen documents...

An Army recruitment center is bombed. An unconscious woman and a dead baby are found in the wreckage...

A Web site operator's death leads Lupo and Bernard to investigate a Christian subculture. Elsewhere, McCoy's political rival uses the media to exploit the situation.

The mistress of the CEO of a failed bank is killed in a hit-and-run and the investigation leads to a kidnapping and extortion plot.

A writer is murdered after investigating an espionage case involving the Chinese government.

Lupo and Bernard uncover a love triangle while investigating a television reporter's murder.

Detectives Lupo and Bernard track the killer of two scientists whose bodies were set on fire. A lawyer wants to strike a deal for a suspect's confession, but Connie has misgivings about the case. Wendy Teal: Gretchen Hall.

Detectives Lupo and Bernard find a link to bias-related incidents against Hispanic men after an illegal immigrant is attacked and left unconscious on a service road.

Two engaged scientists die in a fire and their mentally challenged neighbor is injured while trying to help them. The detectives discover that the couple was stabbed before the fire and this leads them to a disturbed and extremely jealous woman....

Detectives Lupo and Bernard investigate a serial killer who targets homeless men and discover that a copycat may be at work....

A prominent charity executive is murdered and claims of stalking and blackmail surface during the investigation...