Williams and Torres investigate the case of a Wall Street bond salesman who claims to have shot two graffiti artists in self-defense.

A man gets killed by a pit bull which causes Williams and Torres to go into the world of dog betting.

Williams poses as a freshman to investigate a racially motivated killing on a college campus.

Lt. Cooper's daughter ends up missing because of a pedophile she met through email.

A string of robberies leads to an ex-con and his girlfriend. Torres tries to settle a dispute between his father and a mobster.

Williams and Torres pose as a substitute history teacher and a janitor at the high school where a crime was committed.

Moreno poses as a nurse. to solve a newborn's abduction.

Williams poses as a model to investigate the face-slashing of a teen cover girl.

A serial bomber threatens Williams and Torres.

Danny Cort returns with an agenda for Williams to lose his job and his best friend--and to ""smoke [the officer's] little kid.""

Williams is investigated by the internal affairs division for Danny Cort's death (or murder?).

Moreno poses as a prostitute to try to catch a serial killer who Williams wants G to live with him.

After being freed, a policeman's murderer is killed--and the cop's partner is under investigation. Meanwhile, the murderer's girlfriend plots revenge on the gang leader who ordered the officer's death.

Williams and Torres investigate the murder of a free-lance writer. Moreno gets a visit by her missing husband.

Moreno poses as a firefighter in order to find out who's responsible for a female firefighter's death.

Three youths, who were brought from Rwanda to act as mob hit men, are befriended by Father Torres. Moreno gets an inheritance; Williams disagrees with the methods of his son's hockey coach.

When three youths are charged with shooting a couple, one of them insists that, while they robbed the couple, someone else fired the gun.

A hit man's widow wants to become a soldier in the mob and poses as a police officer to kill a fellow crook in Williams's and Torres's precinct.

Lt. Cooper sends two patrol officers to infiltrate a group of corrupt cops When neighborhood dealers starts disappearing.

Williams poses as a member of a militant religious group engaged in an ongoing conflict with a religious sect. Torres's father receives devastating news.

Williams investigate the murder of his son's tutor.

A fight promoter's death leads to a case involving blackmail, murder, and an ex-con whom Williams has helped.

Torres believes the the man who confesses to a killing is taking the blame for his younger brother, who's just received a basketball scholarship to college.

Torres tries to gain the confidence of a gun ring's leader. Williams pretends to be a Jamaican who's prepared to place a substantial firearms order.

A gun-ring leader seeks revenge on Torres.