This documentary series enters the dark world of the biggest online predators investigated by the National Crime Agency (NCA). With unprecedented access, the first episode reveals the case of one of the most prolific online predators of all time, Mathew Falder. The second episode follows the shocking case of Abdul Elahi, who created box sets of his victims. The final episode uncovers the NCA’s investigation and conviction of Anthony Burns, also considered a new breed of predator who had discovered more disturbing ways to control his victims.