A lawyer decides to defend her teenage client charged with murder as an adult with the claim that he's violent because of a genetic predisposition due to an extra Y chromosome.

When Briscoe and Logan suspect that a missing infant may have been murdered by her parents rather than kidnapped, they uncover a terrible family secret which hides a mentally ill serial killer.

McCoy and Kincaid clash over the death penalty as McCoy prosecutes a man who murdered an undercover cop during a drug bust.

Briscoe and Curtis investigate a possible homicide while probing the assault of a retired divorce attorney.

Jamie Ross returns as a defense attorney to represent a previous client who has key evidence concerning a prisoner on death row.

The death of a stockbroker leads the detectives to his girlfriend whose mother is a cosmetics mogul who has a long standing friendship with Branch, and will stop at nothing to protect her corporate image by using hormone replacement therapy withdrawal as the basis for her defense.