Pedro Alonso Lopez confessed to killing over 350 children across Colombia, Ecuador, and Peru in the 1970s. He was born into poverty and faced abuse as a child, which psychologists believe led him to seek revenge on young girls. After several arrests and escapes from prison, Lopez is currently serving a life sentence in Ecuador where he remains incarcerated, though he may be eligible for parole. Forensic evidence and his detailed confessions supported his convictions for multiple murders across three countries.