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, Eddie 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.