http://www.expertlaw.com/library/investigators/serial_killers.html#4
Serial Killers – A Homicide Detective’s Take
Genesis of a Serial Killer
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Serial killers frequently suffer from low self-esteem, often complicated by some sort of sexual dysfunction. Many were themselves the victims of sexual abuse and/or were raised in violent households
For those who develop into serial killers, at some point imaginary scenarios start to become insufficient.
This is a big step, even for a highly aberrant mind. The perpetrator himself may be shocked and frightened, even disgusted, and it may take a while for the first-time murderer to reestablish his personal mandate. While doing so, he may relive his actions over and over in his mind, thus receiving again that gratification obtained during the actual murder and, perhaps, by doing so actually setting the stage for his progression. Some killers take something, a trophy if you will, from their victim. It may be an article of clothing or a photograph, a swatch of hair or piece of jewelry, something of use to embellish their mental re-living of their actions. This suffices for a while but, in time, their ability mentally to revisit their victim’s demise will fade. By the time this happens, if he has reconstructed his entitlement and begins to hunt another victim, such a person has come to fit the classical mold of a serial killer.
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Victim Selection
How does a serial killer select victims? The traditional school of thought holds that generally they select victims based on certain physical and/or personal characteristics. This assertion presupposes that, within the mind of each serial killer, there evolves synthesis of preferred characteristics and, ultimately, a clear, specific picture of his “ideal” victim, be it male or female, black or white, young or old, short or tall, large busted or small, shy or forward, and so on. Then, when that “typical” serial killer begins an active search for human prey, he will go to certain lengths to capture and victimize only those individuals who closely fit the mold.
Unexpectedly, I have observed that most serial killers never actually find and kill their “dream victim.” People fitting such detailed and perfected images may not only be hard to come by, but may also not be easily available in the venues haunted by “hunting” serial killers. So when that ideal victim cannot be found, and when their internal impetus becomes powerful enough, they will settle for a substitute. Ignoring for a moment the disparity between deviant human and normal feline behavior, a serial killer can be compared to a hungry lion that lies in wait for his favorite meal. It may be the lion knows an impala has the most tender or tasty meat. He waits for an opportunity to kill and eat the impala and in doing so may allow easy but not-so-attractive prey to pass unmolested. In time, hunger pains growing and no impala in sight, the famished lion will settle for an unwary bird that happens by. After devouring the bird, which gives his hunger a brief respite, the lion again has time to savor the taste of an impala, and the cycle begins again.
Like the lion, a serial killer just will not defer acting out his urge to kill simply because his “ideal” victim refuses to materialize at his beck and call. But his reason for settling for something less divulges from that of the lion. There are two basic, interrelated reasons for this disparity. The first centers on the extra caution exercised by a serial killer in his search for a victim; the second, upon the nature of the compulsion that drives him to violence.