After years of public fear at the hands of "The Five," the remaining three killers are captured between 1991-2005.
Gacy and Bundy sit on death row. The Green River Killer task force accepts help from an unlikely source—Ted Bundy. BTK kills his own neighbor. Dahmer succumbs to his devious fantasies and commits his most heinous crimes to date.
Gacy and Bundy are finally brought to justice. Meanwhile, the Green River Killer is still at large and becoming more of a threat than ever; Dahmer struggles to resist his murderous urges; and BTK has also gone silent while he raises a family.
With their confidences growing in 1978, Bundy, Gacy, Dahmer, the Green River Killer, and BTK—also known as "The Five"—continue their game of cat and mouse with law enforcement.
Ted Bundy, John Wayne Gacy, Jeffrey Dahmer, the Green River Killer and BTK manage to blend into their communities and elude close calls with police.