Emily, a victim of online predator Alexander McCartney, shares her harrowing experience of being blackmailed for explicit photos as a teenager. McCartney, known for catfishing young girls, has been linked to over 3,500 cases globally and was sentenced to at least 20 years in prison. The BBC Three documentary ‘Teen Predator/Online Killer’ reveals the emotional toll on victims and the importance of reporting online abuse. As law enforcement continues to address this alarming trend, survivors urge others to come forward, emphasizing that speaking out can significantly impact the fight against such predators.