On February 5, 2001, British serial sex killer David Mulcahy was given three life sentences for murdering three women. He also received 24-year jail terms on each of seven counts of rape and 18 years each for five conspiracies to rape, to run concurrently. In short, Mulcahy, 41, was convicted after his childhood friend, John Duffy, spent 14 days in the witness box cataloguing their rape and murder scheme. According to Duffy during the 1980s the pair went on "hunting parties" searching for women. Duffy, who was known as the Railway Rapist because he used his knowledge of the rail network to target his victims, was caught and jailed for life in 1988. In custody he named his former friend -- who police suspected all along -- as his accomplice.
Their three confirmed victims were: Alison Day, 19, who was attacked close to Hackney Wick station in east London in December 1985; Maartje Tamboezer, 15, whose body was found near a station at Horsley, Surrey in April 1986; and Anne Lock, a 29-year-old secretary with a television company who was murdered near Brookmans Park railway station Hertfordshire in May 1986.
Mulcahy and Duffy were first interrogated by police in July 1985 about a series of rapes in North London. They were both released on bail and five months later they raped and murdered Alison Day in Hackney Wick, East London. In the spring of 1986 they raped and murdered two more women -- Maartje Tamboezer, 15, and Anne Lock, 29. The pair was rearrested in November of that year. Police charged Duffy with the three murders and six rapes, but had to release Mulcahy for lack of evidence.
In 1998 Duffy broke his silence and started talking about the murders and other rapes he had committed and implicated Mulcahy as his accomplice in many of the crimes. Mulcahy was finally arrested on February 3, 1999.
In court Duffy described how he and his best friend from childhood would hunt for victims throughout London. "We would have balaclavas and knives," John Duffy, 41, said. "We used to call it hunting. We did it as a bit of a joke. A bit of a game." Duffy, who was jailed for a minimum of 30 years in 1988 for murdering Alison Day, 19, and Maartje Tamboezer, 15, testified at the trial of Mulcahy that between 1982 and 1986 they hunted down and raped 15 women, killing three of them.
Police, believing the two are probably responsible for many more deaths, are re-investigating the 1980 murder of 19-year-old Jenny Ronaldson, who was sexually assaulted, strangled and thrown in the Thames. Detectives plan to examine a national file of over 180 unsolved murders of women to search for any links to Duffy and Mulcahy.