After the body of a young female junkie is identified as the daughter of a wealthy family, Briscoe and Logan try to find out who left her to die in the yard of a day-care center.

Suspects in a psychiatrist's murder include the victim's ex-husband, a patient suffering from multiple-personality disorder and her obstructive father.

A triple murder at a magazine publishing company leads to a case of sibling rivalry, a protective matriarch and a corrupt judge.

The death of a show horse leads to a trial involving insurance fraud, a sting operation and a wealthy woman's disappearance.

After a college co-ed's body is found, the detectives look for a campus rapist, but the medical examiner's report puts them on a different path, one involving prostitution.

The murder of a janitor in a university laboratory building leads back to a student employee whose participation in a drug study may have prompted the crime.

McCoy becomes obsessed with nailing a serial rapist recently released on parole and pushes the cops perilously close to harassment as he attempts to connect the man with a new rape and murder matching his previous M.O.

The cops have a definite clue when a bloodstain that's not the same as the victim reveals that the killer was a blood relative, and the prosecutors stumble when their chief suspect claims their chief witness is her lawyer, and his knowledge of the crime represents privileged communications.

Bloody sheets and an apparently stolen credit card lead Briscoe and Curtis to a pair of college age lovers who present McCoy and Ross with a united front of denial that one of them killed their newborn son and disposed of the body.

The cops, as they try to pin down the specifics of an assault on a man reluctant to talk about it, uncover the alleged rape of two women in custodial care. But as the prosecutors attempt to prepare their case, a reluctant witness changes their view of the cases.

The murder of an audio installation salesman leads the detectives to a case with connections to the mafia.

After the bodies of two teens are found, the detectives trace their identities and learn that one of them had a sister who was traveling with the girls.

The death of an elderly man trying to find who was responsible for the torture killing of his son in 1973 Chile leads to a high-level foreign colonel who is now in a Manhattan hospital.