Law & Order: Criminal Intent takes viewers into the minds of its criminals while following the psychological approaches the Major Case Squad uses to solve the crimes.
The detectives investigate the murder of a judge's clerk, with their attention initially going to the judge himself, who had been having an affair with the young woman.
The deaths of a reporter and his fiancée, gunned down on orders, leads the detectives to investigate political bribery involving the governor's office, which Deakins isn't pleased with.
When the father of a young woman who has been out all night clubbing is found dead in his boat house, Goren and Eames investigate the mysterious club owner only to realise that he is an undercover FBI agent and that the Bureau will not risk their undercover operation even to stop a killer.
Detectives Nichols and Stevens investigate a nurse and the men who love her while looking into the death of a woman who was treated in the emergency room shortly before she was murdered.
When Goren and Eames investigate the death of the new owner of a "little black book" once belonging to legendary playboy George Merritt, they uncover the marital indiscretions of a U.S. Senatorial candidate involving sex clubs.
A boxer's career is derailed when authorities discover he leads a dog fighting ring
A plastic surgeon reports his drug-abusing wife missing, and ends up being the prime suspect after detectives learn he had good reason to want her out of his life.
The detectives investigate a murderer who poisons hospital victims with cyanide. They suspect a nurse whose profile is typical, but when they discover more murders away from the hospital they have to widen their search.
Genetics drive the murder of a doctor and the subsequent investigation.
A psychiatrist who provides expert testimony at criminal trials lays down an insanity defense to hide his obsession for his younger girlfriend after revealing to her that he hired a corrupt detective to murder her brother-in-law at his son's Bar Mitzvah after alleged reports that her niece had been abused by him.
Nichols takes a very personal interest in a case that turns out to have many layers when an old friend is murdered, and somehow the reclusive book dealer's troubled daughter is also involved.
When a wealthy publisher is murdered to prevent him from exposing an elaborate confidence game that enveloped him, his company and one of his editors, Goren and Eames run their own con to extract a confession from the killer.
A philanthropist goes missing after announcing the winner of his research grant.
A gossip columnist who used his insider knowledge to feed his habit is murdered, which leaves Wheeler and Logan to work through a list of suspects that grows longer the more they probe his life.
When a dentist is murdered by the mother of one of his patients, Goren and Eames follow the trail of evidence to a company that appears to have been the victim of a criminal conspiracy involving contaminated mouthwash.
A new murder fits the style of a serial killer who was executed months earlier. Stevens must figure out if the killing is a copycat crime or if she helped convict an innocent man.
Goren and Eames investigate the death of a writer, and whether her torture has ties to the 'hood she came from.
A body that's been decapitated, initially thought to be a mob hit, leads Detectives Nichols and Stevens to an escort service and the financial would-be gods who utilize it.
A psychologist conducts unimaginable field experiments asking his human test subjects to make the impossible choice, but Detectives Nichols and Stevens are even more surprised by the man's inspiration.
A boxer celebrating his victory is shot to death, and when it turns out the victim is the brother of a young man Logan mentored he commits himself and Wheeler to solving the crime. Unfortunately, as he and Wheeler explore the world of amateur boxing, secrets and betrayals complicate the case.
When an business executive's wife and two daughters are kidnapped for a loanshark because the loan hasn't been paid off, Goren and Eames are frustrated by the man's lack of cooperation, which stymies them further when the man's released daughter proves to have been sexually assaulted.
Four men who have been friends since high school discover they're being blackmailed over the death of another childhood friend. When one of the four turns up dead, it's up to Nichols and Stevens to uncover the truth behind a 22-year-old mystery.
A government official blackmails two doctors for overcharging patients before he is killed. The doctors have another secret to protect, however, and worry that someone will find out mobsters financed their practice.
Goren reaches into his own experience working with a partner to solve the murder of a gamer who appears to be connected to a network of thieves using spyware to commit fraud. Eames gives birth.
What should have been a simple meeting turns to murder, leaving Wheeler and Nichols to question an embassy, a security company, the victim's relatives, and how it all connects to the Olympic Site Selection Committee.