John Francis Duffy and David Mulcahy embarked on a sickening spree of rape and murder in the 1980s, targeting women and children near railway stations in the UK – but what were they like as kids?
The chilling and utterly horrifying crimes of the ‘Railway Killers’ rank among the most gruesome in criminal history. John Francis Duffy and David Mulcahy, born in 1958 and 1959 respectively, are remembered as two sadistic serial rapists turned murderers who preyed on women and children near railway stations in southern England during the 1980s.
The pair, who were childhood friends from their days at Haverstock School in Chalk Farm, north London, formed a lifelong bond over their shared perverse fantasies. In a disturbing precursor to their later atrocities, they were once discovered at school, laughing and covered in blood after brutally killing a hedgehog by using it as a cricket ball.
Psychologists often link such early displays of cruelty towards animals, showing a complete lack of empathy for their suffering, with adult murderers who graduate from harming defenceless creatures to humans.
This theory certainly holds true for the Railway Killers, who escalated their violence to target women and children. Among the duo, psychologists would later observe that Mulcahy exhibited more violent tendencies.
After leaving school, the pair seemed to have left their troubling behaviour behind, both settling into marriage and steady employment within a year of each other.
Mulcahy found work as a plasterer and builder, while Duffy took up carpentry for British Rail – a role that would provide him with valuable knowledge about railway stations, which would later become their hunting grounds.
Their first reported rape occurred in North London in 1982, with conflicting reports suggesting it happened near either Kilburn Station or Hampstead Heath railway station.
Their initial victim was a 22-year-old woman returning from a late-night party, who was kidnapped and taken to a shed where she was brutally stripped, blindfolded and raped.
Over the following year, the ruthless duo assaulted and raped several more women across London and its surrounding areas, with at least 18 known victims during this time. The horrific attacks typically took place at or near deserted railway stations.
It’s thought that the duo briefly halted their chilling spree in 1983, possibly due to Duffy’s marital split, but resumed their brutal assaults in 1984.
In 1985, three women were violated on the same night in Hendon, prompting West London police to initiate ‘Operation Hart’ to apprehend the culprits. The attackers were described by some victims as a short, ginger-haired man and a larger accomplice.
On 29 December 1985, the pair escalated from being rapists to murderers, committing their first killing. Tragically, 19-year-old Alison Day became the duo’s inaugural murder victim, abducted near Hackney Wick station.
Initially, Duffy and Mulcahy reportedly threatened Alison with a knife, before both men violated her. The teenager was then forced to traverse live railway tracks, leading to the parapet of a bridge, from which she fell into a canal.
Believing she had evaded their monstrous grasp, Alison managed to swim to the bank, but the depraved pair were lurking there, dragging her from the water to wasteland, where they proceeded to strangle her to death with a tourniquet fashioned from her blouse.
Her body – found bound and gagged 17 days later – was then submerged in the River Lea with stones and granite cobbles weighing down her coat, triggering a separate investigation dubbed ‘Operation Lea’.
Following Alison’s murder came the horrific slaying of 15-year-old Maartje Tamboezer in Surrey during April 1986.
The duo allegedly caused her to fall from her bicycle using fishing line, subjected her to repeated sexual assault, before Mulcahy throttled the schoolgirl with her own belt and they torched her remains in an attempt to eliminate evidence.
Just one month later in May, the Railway Killers claimed another victim in Hertfordshire – this time 29-year-old newlywed Anne Locke, who was employed as a secretary at London Weekend Television.
This third killing prompted the establishment of ‘Operation Trinity’, the first multi-force murder probe since the Yorkshire Ripper investigation during the 1970s.
The sadistic campaign of terror orchestrated by Mulcahy and Duffy encompassed as many as 40 sexual assaults and three killings, resulting in Britain’s inaugural known instance of “psychological offender profiling” as investigators sought to apprehend the perpetrators, given that effective DNA technology remained years away, reports the Mirror.
Distinguished behavioural expert Professor David Canter was tasked with creating a psychological assessment of the killer. Out of Professor Canter’s 17 observations, 13 aligned precisely with Duffy’s characteristics, establishing the foundation for such profiling techniques to become standard practice in law enforcement moving forward.
In February 1988, Duffy was put on trial and initially found guilty of two murders and four rapes. Following his confession to further crimes during a string of police interviews over the subsequent years, he was given additional sentences, sealing his fate behind bars for life.
Duffy chose not to challenge any of his sentences, reportedly expressing remorse for his actions and acknowledging the justice in his punishment.
After an extensive hunt and lengthy wait, Mulcahy was finally brought to justice in 2001. He was convicted of three murders, seven rapes, and five conspiracies to rape, earning him three life sentences (with a minimum term of 30 years), plus 24 years for each rape and concurrent terms for the conspiracies.