John Duffy

John Duffy was a British serial killer and rapist known as one of the "Railway Killers," responsible for a series of attacks on women near railway stations in London during the 1980s. He committed his crimes alongside accomplice David Mulcahy. Duffy was eventually arrested and convicted, receiving a life sentence. His case was significant in the development of offender profiling techniques in the United Kingdom and remains one of the most notorious series of crimes in London’s history.