not take the hit on their gang lightly. Kates agrees. He releases Eddie with one warning: "Find who burned the Comachos before they do." After learning that one of his gang members was shot by police, and that Victor Comacho survived, Tony Luna decides to leave town. He asks Lou Gamiani (Lou Damiani) to have someone guard his daughter, Diana Luna (Molly Hagan), a young artist. Gamiani feels he has put the entire outfit at risk. Apart from breaking in a new partner, and the introduction of the new Prowler police three-axle robot, Cusack is shunned by other officers for his refusal to sign a petition to have Cragie cleared. He bluntly tells Brennan: "If Cragie doesn't get off the streets, he's gonna kill somebody else, or get somebody killed." Tailing Gamiani to the Lincoln Park Zoo, the detectives witness a tense exchange between him and Diana. Cusack discovers who Diana's father is. He and Kopalas stake out the Luna residence as the Comacho funeral procession comes through the neighborhood. They visit Tony Luna's uncle, Felix Scalese (Nathan Davis), to request he stop the imminent conflict. Responding to a DOA call in Lincoln Park, Brennan and Music identify the victim, who had been given a "Colombian necktie", as Tony Luna's bag man. Brennan notes another call to Luna's restaurant, where the officers found the mutilated owner hanging from a meat hook. A car lot run by Tony Luna is firebombed and the owner burned alive. A vicious gang war has begun. Posing as food vendors, the Comachos brutally gun down every member of the Luna household. Cusack, knowing they will go after Diana to bring Luna out of hiding, tries to get to her first. Gamiani is stabbed to death. Cusack and Kopalas arrive on the scene. Cusack takes off after Diana, who is being chased by several Comacho gang members. In an alley. Cusack surprises them at gunpoint. One takes Diana hostage with a knife, but Cusack disarms the three remaining suspects and goes after the one with the girl. He follows them to the Randolph/Wells (CTA) elevated station and boards a train. A standoff ensues, leading to a fight on the roof of the eight-car train. At a bridge crossing, the gang member jumps into the Chicago River, where he is run over by a speedboat. Cusack then places Diana in a safe house with his old friend