When a girl's parents frantically search for her, Briscoe and Green see that the girl's belongings were packed up in her apartment. They learn that the girl had been seeing a married man -- her boss. When the boss is brought up on charges, his wife sheds some new evidence.

A woman is drugged and falls to her death, and the evidence suggests that her ex-boyfriend and her current husband's ex-wife may have conspired to kill her.

The execution style shooting of a city contractor leads Detectives Briscoe and Green to suspect a professional hitman. They first focus upon possible enemies of the victim, but end up suspecting the victim's wife and her boyfried of hiring the killer. However later discovered evidence leads McCoy and Southerlyn to a conspirator that no one had suspected.

When the witness in a jewelry store robbery-homicide fails to appear in court, McCoy suspects foul play until he discovers that the man is a fugitive in a 20-year-old murder case.

The murder of an admissions director of a private school leads the detectives to investigate a pair of angry parents whose children were denied admission, but then set their sights on the headmaster when they discover that the victim was about to go public with the denied admissions.

The husband of a woman whose partially decomposed body is found floating in the Hudson River becomes the prime suspect in her murder until the prosecutors uncover a connection between her prospective attorney and a judge who has heard a suspiciously high number of his cases.

When a paroled child murderer is run down, the investigation leads to a terrified social worker and an experimental prison therapy program.

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 defense attorney whose own agenda may undercut that of his client.