Emmy-winning investigative reporter Chris Hansen brings his journalistic skills and criminal insight to this newsmagazine series, digging into the depths of unlawful behavior and bringing life to some of America’s most chilling, heart-wrenching homicide cases. Mirroring his breakthrough reporting for “Dateline NBC,” especially exposing hundreds of sexual predators who targeted teenagers online, “Killer Instinct” harnesses Hansen’s passion for uncovering the truth and shedding new light on homicide cases. Using access to key witnesses, loved ones and law enforcement officials, Hansen deconstructs the cases before putting pieces back together. He adds insight drawn from visiting crime scenes, interviewing key players and uncovering archived material.