out every time he goes out on a mission, and they have to be performed in the same style every time. Examples of signature in a killer might be things like: does he strip the victim? Does he make a neat pile of the victim’s clothes? Does he use cosmetics on the victim after death? Is he having sex with the victim postmortem? Is he performing some kind of ritualistic mutilation like cutting off their breasts or penises or ears?’
Simon looked faintly queasy. Tony wondered how many murder victims he’d seen so far. He would have to grow a thicker skin or else be prepared to put up with the jibes of colleagues who would enjoy watching the profiler lose his lunch over another vitiated victim. ‘A serial offender must accomplish signature activities to fulfil himself, to make the act meaningful,’ Tony continued. ‘It’s about meeting a variety of needs—to dominate, to inflict pain, to provoke distinct responses, to achieve sexual release. The means can vary, but the end remains constant.’
He took a deep breath and tried to keep his mind off the very particular variations he’d seen at first hand. ‘For a killer whose pleasure comes from inflicting pain and hearing victims scream, it’s immaterial whether he…’ his voice faltered as irresistible images climbed into his head. ‘Whether he…’ They were all looking at him now and he desperately struggled to look momentarily distracted rather than shipwrecked. ‘Whether he…ties them up and cuts them, or whether he…’
‘Whether he whips them with wire,’ Shaz said, her voice casual, her expression reassuring.
‘Exactly,’ Tony said, recovering fast. ‘Nice to see you’ve got such a tender imagination, Shaz.’
‘Typical woman, eh?’ Simon said with a grunt of laughter.
Shaz looked faintly embarrassed. Before the joke could escalate, Tony continued. ‘So you might have two bodies whose physical conditions are very different. But when you examine the scenario, things have been done that were additional to the act of killing and the ultimate gratification has been the same. That’s your signature.’
He paused, his control firmly in place again, and looked around, checking he was taking them all with him. One of the men looked dubious. ‘At its most simplistic,’ he said, ‘think about petty criminals. You’ve got a burglar who steals videos. That’s all he goes for, just videos, because he’s got a fence who gives him a good deal. He robs terraced houses, going in through the back yard. But then he reads in the local paper that the police are warning people about the video thief who comes in through the back yard, and they’re setting up neighbourhood watch teams to keep a special eye on back alleys. So he abandons his terraced houses and instead he goes for between-the-wars semis and gets in through the side windows in the downstairs hall. He’s changed his MO. But he still only nicks the videos. That’s his signature.’
The doubter’s face cleared. Now he’d grasped it. Gratified, Tony picked up a stack of papers divided into six bundles. ‘So we have to learn to be inclusive when we’re considering the possibility of a serial offender. Think “linking through similarity”, rather than “discounting through difference”.’
He stood up again and walked around among their work tables, gearing himself up to the crucial part of the session. ‘Some senior police officers and profilers have a hypothesis that’s more confidential than the secrets of the Masonic square,’ he said, capturing their attention again. ‘We believe there could be as many as half a dozen undetected serial killers who have been operating in Britain over the past ten years. Some could have claimed upwards of ten victims. Thanks to the motorway network and the historic reluctance of police forces to exchange information, nobody has sat down and made the crucial connections. Once we’re up and running, this will be something we’ll be considering as
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