Blood Secrets: Chronicles of a Crime Scene Reconstructionist by Ann Rule

Author:Ann Rule [Ann Rule]
Language: eng
Format: epub
Tags: Fiction, General, Murder, Medical, True Crime, Social Science, Law, Criminal Investigation, Criminology, Blood, Hematology, Evidence, Bloodstains, Evidence; Criminal, Forensic Medicine, Forensic Hematology, Forensic Science, Evidence; Expert
ISBN: 9780312564001
Google: qClDKpG_vikC
Amazon: B005DIAM4I
Publisher: Macmillan
Published: 2010-04-13T04:00:00+00:00

Web of Lies?

It’s not uncommon for people who stumble upon dead bodies to try to find out if the victims might still be alive. They check for a pulse, turn a victim over, shake him, try to resuscitate him, or come in contact with wet blood through any number of other innocent, well-intentioned actions. In most cases they panic, particularly if they know the victim. They might not even realize that they’ve transferred blood to their own clothing until a police officer points it out. Unfortunately, murderers know this. And, like Hartmann and Greineder, they have an annoying habit of trying to explain away the bloodstains on their clothes by claiming they were the proverbial innocent bystander “trying to help” the victim.

One of the most accurate ways to find out whether such transfers are inadvertent or incriminating is to do a microscopic examination of the fabric. Blood coating only the top layer suggests that the person brushed against wet blood accidentally. However, minuscule droplets of blood spatter embedded more deeply in the fabric’s fibers suggest the person wearing the clothing was either the assailant or stood nearby while an attack causing medium-or high-velocity spatter occurred.

Taking this one step further, crime scene reconstructionists would use the position of the blood spatter on the clothing to determine whether it suggests guilt or innocence. The Sandra Anne Duyst murder is a prime example: Not only did an examination of her husband’s clothing reveal high-velocity blood spatter, but it showed spatter concentrated behind the right sleeve—precisely where blowback would hit a shooter extending his arm as he pulled the trigger.

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