Julissa Trapp, a dedicated homicide detective, delves into the heart-wrenching case of a woman found in an Anaheim landfill. She talks about her promise to the victim's mother, revealing the emotional toll on families of missing women. The discussion uncovers the grim reality of tracking sex offenders and the challenges within the justice system. As the investigation intensifies, Trapp shares her experience connecting GPS data to apprehend a serial killer, exposing the dark complexities of evil intertwined with the relentless pursuit of justice.