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.

After sanitation workers find a teenage boy's body, the investigation leads to a school bully who displays an avid interest in martial-arts weapons, and whose father bought the murder weapon.

After a prisoner's murder, an investigation leads to a suspect, but the question arises if he acted on his own or on orders from within the prison.

Briscoe and Green are assigned to a case involving an eccentric comedian who may have killed his young son by dangling him off a ledge.

Lupo and Green investigate the shooting death of young white teenager and a 9 year old black girl. The investigation hits a brick wall when both white and black communities refuse to talk - an unfortunate result of formerly black neighbourhoods being bought out by rich whites. The detectives discover that the teenage victim and two of his friends had a basketball taken from them by a black teenager which eventually led to an altercation with deadly consequences and subsequently to surprising culprits.

The body of a young war veteran is found in a parking garage and the murder is connected to a law professor who used to work for the Department of Justice.