Blackmail is the twelfth episode of the twentieth season of the television series Law & Order. It aired on NBC January 15, 2010.

The search for a writer’s killer leads detectives to a closed espionage case.

A legal aid strike ends in the death of a lawyer, and the investigation leads to a golf greenskeeper who proclaims his innocence, again. Then the case takes an even…

When the police shut down a dog-fighting ring, the investigation becomes a murder case after a woman’s finger is found inside one of the dogs; things get more complicated as…

A terrorist organization seems to be tied in with the violent death of an art dealer, until the victim’s troubled son with ties to a fanatic religious group is investigated.

After Michael Jones dies in his mother’s hospital room with no immediate explanation, his mother Ashley accuses her former husband’s adult children, Miles and Hillary Foster, who are fighting her…

A deadly drunk-driving car accident brings Detectives Cyrus Lupo and Kevin Bernard to the scene when a suspicious nasal spray is found. After the medical examiner realizes the nasal spray…

The owner of a trucking company, Vic Russell, is found dead after a business meeting; detectives uncover information that leads them to believe that Russell had ties to the Russian…

After a man causes a massive train crash that results in multiple deaths, McCoy tries to prosecute him for murder despite his insanity defense. But McCoy finds himself hampered by…

A high school party turns tragic when a teenager is found dead, and the detectives end up playing games with the two leading suspects to find out the real story….

The shooting of a Panamanian jockey sends Fontana and Falco into the colorful world of horse racing, and they learn that the animal’s owner used stolen funds for the purchase.

Detectives Lupo and Bernard investigate when the writer of a bestselling memoir is found dead in a community of male prostitutes.

When a TV network executive is found murdered, Detectives Fontana and Green suspect a pair of twins who were stealing from the organization until they discover a celebrity chef with…

Lupo and Green investigate the shooting death of young white teenager and a 9 year old black girl. The investigation hits a brick wall when both white and black communities…

Fontana and Green investigate when a bank manager is involved in the robbing of his own bank and learn that his daughter is being held hostage and that he had…

When a teenage boy commits suicide after firing on a doctor and hitting an innocent party, Fontana and Green investigate why he was after the doctor to begin with.

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

A young woman escapes from a polygamous cult.

The investigation into the murder of a wealthy husband leads to the uncovering of a conspiracy involving infidelity and greed and leads to one defendant attempting to evade justice by…

The case against a high powered executive accused of killing her lover rests on the executive’s estranged husband and unstable teenage daughter.

Green and Cassady investigate after the photograph of a dead woman is found on a popular website, B-Frendz.com. Their investigation leads them to a mentally disturbed young man whom the…

When a rap producer is found shot to death in his studio, detectives focus on his protege, whose demos link him and a friend to a second murder. As the…

Fontana and Green are baffled by a series of flu-related deaths until they discover that the victims were given fake vaccine. McCoy goes after the con man who distributed the…

When McCoy fails to win a murder conviction against an eccentric cross dressing millionaire for the death of his neighbor, he redoubles the effort to convict the man for murdering…

After the body of a teenage boy is found dead in a warehouse, detectives use DNA to connect the boy to a convicted rapist and serial killer, then to the…

A journalist’s suicide becomes suspect after Green and Fontana find evidence at the scene suggesting that it wasn’t a suicide after all.

Cyrus Lupo returns to New York after four years abroad to deal with his own terror. Lupo and Green investigate two suicides committed the same way. The detectives are suspicious…

When a plastic surgeon’s greed and narcissism contribute to his failure to care for a patient that ultimately results in her death, Branch insists that McCoy prosecute him for criminally…

After the daughter of one of Van Buren’s college friends is found dead in her room, a suicide, Van Buren joins Green and Fontana in hunting down the man who…

The investigation into the death of a governor’s wife uncovers a web of infidelity, greed, and corruption which forces McCoy to counter a defense based on a ground-breaking interpretation of…

The case of a man who defiled a copy of the Torah turns into a religious battle for McCoy.

The detectives are skeptical when a former street activist turned shock jock with a history of staging phony muggings to gain publicity for his causes appears to be the subject…

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.

When a con man passing himself off as a grief counselor is poisoned by a respected doctor he victimized, McCoy must determine whether revenge or insanity prompted the crime.

McCoy goes after the C.E.O. of a pharmaceutical company who knowingly commissioned further clinical trials on a drug to extend its patent protection yielding millions of dollars of profit without…

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…

The apparent hit-and-run of a homeless man send the detectives on a search for the driver, a high profile female publicist, which fuels the fire for the prosecutors to obtain…

After Green goes undercover to gather evidence on the gun dealers who murdered two detectives during a buy-and-bust, McCoy is able to connect the hit men to the attorney who…

The investigation into the murder of a former bookie turned mob informant reveals a disturbing new wrinkle in organized crime involving legitimate businessmen moonlighting as contract hitmen in a battle…

When a prison gang puts out a contract on a Sing Sing corrections officer and his family, assigning the job to a newly released ex-con, the terrified officer pleads preemptive…