Breakthrough in DNA technology
In the 1970s, four young women - Eva Dvorak, Patricia McQueen, Melissa Rehorek, and Barbara MacLean - were tragically murdered in Calgary. All victims were last seen walking in the evening and were later found asphyxiated outside the city's limits. At the time of their murders, forensic technology was insufficient to test for a DNA profile from the seminal fluid found at the crime scenes. It was not until the 2000s, when DNA analysis had advanced significantly, that the RCMP could begin to make headway on the list of 853 initial suspects. In 2003, through DNA analysis, police confirmed that the same individual was linked to the deaths of both Rehorek and MacLean. Further progress was made with the advent of investigative genetic genealogy in 2021, which helped pinpoint Srery as the perpetrator.
International efforts and suspect profile
Srery, who was born in 1942, had a criminal record of sexual offenses in the U.S. before moving to Calgary in the 1970s. His criminal activities continued until his incarceration and subsequent death in an Idaho prison in 2011 due to natural causes. With the help of Interpol and forensic services from the Idaho State Police, investigators confirmed Srery's DNA matched the profiles from the Calgary cases.
The impact of the investigation on victims' families
The identification of Srery brought a complex sense of closure to the victims' families, who had waited decades for answers. The families issued statements appreciating the determination and effort of the investigators involved in the case. Although Srery's identification does not bring back their loved ones, it provides some solace in knowing that the perpetrator has been identified.
The resolution of these cases highlights the significant strides made in forensic technology over the years. It also reflects the persistent efforts of law enforcement across borders to solve crimes, no matter how old. This breakthrough reassures the public about the enduring commitment to justice, ensuring that perpetrators are held accountable, even posthumously.
Source: Global News





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