<Tr> <Td> Paula Godfrey </Td> <Td> John Edward Robinson </Td> <Td> Overland Park, Kansas, USA </Td> <Td> September 1, 1984 </Td> <Td> October 2003 </Td> <Td> A 19 - year - old woman vanished after she was hired by Robinson, a con man and serial killer, to work as a sales representative for his shell company, and subsequently sent away "for training". Her body was never found . </Td> </Tr> <Tr> <Td> Elisabeth Fritzl </Td> <Td> Josef Fritzl </Td> <Td> Amstetten, Austria </Td> <Td> August 29, 1984 </Td> <Td> March 14, 2009 </Td> <Td> An 18 - year - old girl imprisoned in an underground cell and raped by her father for 24 years, resulting in the birth of seven children . The truth was discovered when a daughter was admitted to a hospital with life - threatening kidney failure . </Td> </Tr> <Tr> <Td> Kylie Maybury </Td> <Td> Gregory Keith Davies </Td> <Td> Melbourne, Victoria, Australia </Td> <Td> November 6, 1984 </Td> <Td> May 29, 2017 </Td> <Td> A six - year - old girl kidnapped, drugged, raped and murdered after leaving a convenience store on Melbourne Cup Day . Davies became a suspect only in 2014, when Victoria Police made a public call for help . </Td> </Tr> <Tr> <Td> Tiffany Stasi </Td> <Td> John Edward Robinson </Td> <Td> Overland Park, Kansas, USA </Td> <Td> January 9, 1985 </Td> <Td> October 2002 </Td> <Td> The four - month - old daughter of a 19 - year - old single mother that Robinson, met at a battered women's shelter . Robinson promised the mother a job, home and daycare for the baby in Chicago, and days later gave the baby to his own brother, who had been unable to conceive one with his wife, under the claim that her mother had committed suicide . Stasi's identity was confirmed by DNA in 2000 . Robinson was also convicted for the murder of the mother (whose body was never found), but the conviction was overturned on technicalities in November 2015 . </Td> </Tr>

When does a homicide become a cold case