Holman ideintifies Torello as a dirty cop to Breitel. After an attempt on his life, Luca takes refuge in Florida.

Here we meet the three major players of the series: Lt. Mike Torrello, head of Chicago's Major Crime Unit(MCU); Ray Luca, a young hood about to make his mark on the underworld; and David Abrams, an idealistic public defender trying to bury his Mob-connected roots. As the story unfolds Torrello is working with to bring down members of Chicago's underworld while Luca is taken under the wing of Manny Weisbord; one of Chicago's most powerful crime figures. As events proceed Torrello and Luca each become aware of the other's existence. Torello realizes that there is a new player that he must bring down.

Torello falls in love with a Justice Attorney's former wife, only to find out that the attorney has been molesting his adopted daughter. Molestation charges jeopardizes the Unit's investigation of Luca.

Luca's jubilation over his growing business turns to fear that his associates are setting him up. Luca's insatiable lust for violence proves his undoing when he rapes Pauli's girlfriend. Pauli testifies for the prosecution in Luca's trial.

An overzealous senator outrages crime bosses by subpoenaing them to appear before an organized crime commission. An actress with a shady past falls for Torello.

Torello confronts his feelings for Julie when she asks him to rescue her kidnapped husband, who is a doctor forced to tend to one of his injured kidnappers.

Torello and his men chase Luca to Mexico where they will get no help from the US Government.

Here we meet the three major players of the series: Lt. Mike Torrello, head of Chicago's Major Crime Unit(MCU); Ray Luca, a young hood about to make his mark on the underworld; and David Abrams, an idealistic public defender trying to bury his Mob-connected roots. As the story unfolds Torrello is working with Abrams to bring down members of Chicago's underworld while Luca is taken under the wing of Manny Weisbord; one of Chicago's most powerful crime figures. As events proceed Torrello and Luca each become aware of the other's existence. Torello realizes that there is a new player that he must bring down.

To take over Las Vegas casinos, Luca murders the head of a resort-workers union to put his own man in the position.

Torello cannot identify the source of a money-laundering operation. Clemmons reveals his suspicions about Iris's new casino partner.

With Torello's MCU hunting a psychopath, Luca plots jewel heists and the takeover of a sports-gambling operation.

Breitel brutally cross-examines Torello. Acquitted Luca moves to Las Vegas. Torello gets a new assignment.

After his murder mistrial, Luca clashes with a crime kingpin over plans to split up control of the sinking Luca gambling empire. Pauli changes his mind and rescues Luca from Torello as they hide in a house in the desert, a target site for nuclear testing.

The Senterros, a family of Mexican cattle ranchers, controls the marijuana trade, so Torello's unit sets up a sting operation, but detective Joey Indelli leaves to try to save a callgirl from her sadistic pimp.

Torello follows a crazed killer into Mexico, unaware his quarry will lead him to an arms-for-drugs operation run by an alive-and-well Luca.

Torello and his men save Danny from certain death while Luca is told by a top military commander that he is nothing in Mexico.

Torello gains a major advantage when one of Luca's burglars is connected to a robbery-homicide of a coin collector's wife. Torello finds out Julie is pregnant.

Torello is subpoenaed to testify for Luca. An enraged Abrams jumps to Torello's defense. Luca orders Torello and Abrams killed.

Torello and Krychek join the Federal Task Force planning to raid Luca's new gambling business in Las Vegas.

Luca's greedy ploy to take over another casino puts his entire gambling empire in jeopardy.

Luca falls for an actress in a movie he is financing and discovers she is more than even he can handle.

A Chinese agent dupes Torello into looking for her father while she smuggles plutonium out of the country.

Torello and his men catch up to Luca in Mexico and force him to escape but they all get trapped inside a pilotless airborne plane.

Mobsters support Luca's nationwide gambling scheme. A publicity-seeking sheriff hampers Torello's arrest of one of Luca's men.

Divorced Torello finds comfort with Inger. The Crime Unit nabs Luca's jewelry-heist team. Torello's best friend supplies the Mob with capital.