A double homicide casts suspicion on both the ex-wife and the former boyfriend of the murdered duo, with the dead man's murdered son holding the key to the mystery.

The assassination of an African-American leader leads to the arrest of a man whose ex-wife was suspected of having an affair with the victim.

The police suspect a cover up when they receive an anonymous tip that a wealthy man was murdered by his wife, who refuses to allow an autopsy after a physician declares that the death occurred from natural causes.

Briscoe and Logan bet that the killing of a star athlete's father is linked to gambling debts and threats to the baseball player's family.

Among the suspects in a lawyer's murder are a swindler, who conned a woman out of her family fortune, and the woman's once-wealthy son.

When the detectives solve a series of murders committed by a holdup team in ski masks, McCoy must determine whether a young woman found with them is an unwilling hostage, or an active participant in the crimes.

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.

The shooting of two people in a restaurant restroom takes some abrupt turns as they try to discover who exactly the intended victim was, and the prosecutors have to deal with a defendant claiming to have been in a dissociative state while committing the crime-- the same defense used years before by the defendant's father.

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.