John Duffy and David Mulcahy, known as the “Railway Killers,” were a pair of British serial rapists and murderers who terrorized the UK during the 1980s. The duo targeted women near railway stations in and around London. Their crimes, committed roughly between 1982 and 1986, involved a series of brutal rapes and three murders. Duffy, who was caught first, was convicted in 1988 for the attacks. He was sentenced to life imprisonment for two murders and four rapes. During his incarceration, Duffy eventually implicated Mulcahy as his accomplice. In 2000, after a renewed investigation and advances in forensic science, Mulcahy was arrested and convicted for his role in the crimes. The case is infamous for the psychological manipulation between the two, with Duffy often portrayed as being dominated by Mulcahy, and for the police’s extensive efforts to apprehend them, involving the early use of offender profiling.

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