الفهرس 
nature of the crime sceneOnly 14 pages are availabe for public view
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Abstract
Crime scene investigation is the meeting point of science, logic and
law. ”Processing a crime scene” is a long, tedious process that
involves purposeful documentation of the conditions at the scene and
the collection of any physical evidence that could possibly illuminate
what happened and point to who did it. There is no typical crime
scene, there is no typical body of evidence and there is no typical
investigative approach.
The investigation of a crime scene begins when the CSl ( crime
scene investigation ) unit receives a call from the police officers or
detectives on the scene. The overall sysiem works something like this:
* The CSI ( crime scene investigation ) unit arrives on the scene
and makes sure thz.~ it is secure. Th~y do an initial ·.valk-through
to get an overall feel for the crime scene, find out if anyone moved
anything before they arrived, and generate initial theories based on
visual examination, make note of potential evidence. At this point,
they touche nothing.
* The CSI ( crime scene investigation ) unit thoroughly
documents the scene by taking photographs and drawing sketches
during a second walk-through and Sometimes, the documentation
stage includes a video walk-through, as well. They document the
scene as a whole and document anything they have identified as
evidence and They still touche nothing.
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. * The CSI ( crime scene investigation ) unit then systematicaJly
makes its way through the scene collecting all potential evidence,
tagging, logging and packaging it so that it remains intact on its way
to the lab.
* Fina11y, the crime lab processes all of the evidence the CSI (
crime scene investugation ) collected at the crime scene. When the
lab results are in, they go to the lead detective on the case.
Every CSI ( crime scene investigation ) unit handles the division
between field work and lab work differently. What goes on at the
crime scene is called crime scene investigation ,or crime scene
analysis, and what goes on in the laboratory is called forensic ·science.
Not all CSis (-crime scene investigator) are forensic scientists. Some
CSis ( crime scene investigator ) work in the field only they collect
the evidence and pass it to the forensic lab. In this case, the CSI
( crime scene investigation )must still possess a good understanding of
forensic science in order to recognize the specific value of various
types of evidence .