Invisible Monsters

Weaving together the stories of five of America's most notorious serial killers - Ted Bundy, John Wayne Gacy, Jeffrey Dahmer, the Green River Killer and BTK - and examining how these killers claimed so many victims while evading capture.

In the mid-to-late '70s, Bundy, Gacy and BTK begin claiming victims while Dahmer and the Green River Killer inch closer to realising their grim fantasies. These dangerous men were able to blend into their communities and lead seemingly normal lives.

With their confidence 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, some even going as far as directly taunting the police and media.

After years of evading capture, Gacy and Bundy are finally brought to justice. Meanwhile, the Green River Killer is still at large, Dahmer struggles to resist his murderous urges, and BTK has also gone silent while he raises a family.

In the mid-1980s, two of 'The Five' - Gacy and Bundy - sit on death row. Meanwhile, the Green River Killer has claimed 41 lives and, with no major suspects, the case's ground-breaking task force accepts help from an unlikely source: Ted Bundy.

After years of public fear at the hands of 'The Five,' the remaining three killers are captured between 1991 and 2005. Ironically, the perfect storm of culture, media, law enforcement and technology they exploited has ended their reign of terror.