Free The Devil's Garden by Debi Marshall

the disturbed psyche of a serial killer. Driven to avenge a prostitute who had ripped him off for ten pounds, Sutcliffe targeted prostitutes as his victims. In his warped state of mind, any woman walking along the street at night was fair game. After his first murder, revenge intertwined with blood lust. He could not stop.
    The lessons from the Yorkshire Ripper case led to a significant shift in the way British police tackled evidence and suspects in major crimes. Dr Canter had described to police how people use 'mental maps' to centre themselves in an area, marking out their territory with their own idiosyncratic memory of that place. '...Each person creates a unique representation of the place in which he lives, with its own particular distortions,' he wrote. 'In the case of John Duffy [serial rapist], journalists recognised his preference for committing crimes near railway lines to the extent that they dubbed him the "Railway Rapist". What neither they nor police appreciated was that this characteristic was likely to be part of his way of thinking about the layout of London, and so was a clue to his own particular mental map. It could there-fore be used to see where the psychological focus of this map was and so specify the area in which he lived.'
    It was a salient lesson that their police counterparts in Western Australia would need to heed – that, and the wisdom of Friedrich Nietzsche: 'Whoever fights monsters should see to it that in the process he doesn't become a monster.'

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    Despite the fact that Sutcliffe had been identified by several different police jurisdictions, a lack of appropriate data storage and a workable case management system meant British police had failed to recognise that he had already come under police scrutiny multiple times. To prevent the embarrassment of this reoccurring, HOLMES was created. The WA Major Crime Squad purchased HOLMES in 1989. Applied to Macro as its case management system, it has provided a database for all information gained during the investigation, identifies common denominators and allows priorities to be noticed and actioned. It also provides a case management tool that identifies how many lines of inquiry are currently active, how long particular information has been with an investigator and the current workload of investigators. With more than 60,000 pieces of information that need to be assessed and prioritised for 'action' or 'information only', it also quickly eliminates people from the investigation. Taking each step at a time, HOLMES picks over the known data. Starting with the capture of information, it moves through priorities, allocation of resources, investigation, suspects' alibis and quality control before it finally archives material.
    The system is linked directly to the UK police via a telephone link, which allows the HOLMES system experts access to the data for quality assurance purposes. 'This was 1996, pre-internet days,' Tony Potts says. 'It was an innovative use of breaking technology aimed at ensuring we were doing it right. We averaged around 2000 calls per day to Crime Stoppers for the first few weeks after each disappearance. All that information was channelled into HOLMES.' But if it proved helpful, it didn't provide the one thing police desperately needed. A breakthrough.
    Pre-HOLMES, police relied on three prongs to solve a crime: the crime scene, doorknocks and media. The Macro taskforce inveigle the press for help and they receive it. Reporters call in to identify ways in which to keep the case alive in the public eye and to offer clues on what can be packaged as a story. With a background of more than 30 years in journalism, veteran Channel 10 reporter Rex Haw recalls it was a time when the lines between police and the media were deliberately blurred for the sake of the community's safety. 'It didn't mean we didn't kick them if we needed to, but we did work very closely with them. The media is always ravenous for a new angle on a story