A man is found murdered execution style in the window of his workplace, and above him the word Killer is written. A stamp on his hand leads Detectives Benson and Fin to a gay circuit club, also a methamphetamine hangout. Detectives Benson and Fin scan the ID's of the guests who were at the club and during the investigation, Fin discovers his estranged son Ken Randall was also there. As the case continues, Detective Fin confronts his son and Medical Examiner Warner confirms that the victim Robin Weller had the deadly and contagious new strain of AIDS which is becoming an epidemic. When Weller's boyfriend, who also carried the deadly strain of AIDS, is also found murdered, eyes turn toward Gabriel Thurman an activist trying to stop the spread of the disease. The case goes to trial and Thompson's attorney Carolyn Maddox, tries to sway the jury that her client's actions were justified.