tography.
             The purpose of crime scene investigation is to help establish what happened (crime scene reconstruction) and to identify the responsible person. This is done by carefully documenting the conditions at a crime scene and recognizing all relevant physical evidence. The ability to recognize and collect the evidence is important in solving and prosecuting violent cases. In majority of the cases, The law enforcement officer who protects and searches the crime scene plays major part in determining whether the physical evidence will be used in solving or prosecuting the violent crime. Crime scene investigation is not what we think it is, unlike the movies, is actually a difficult and time-consuming job. There is no substitute for a careful and thoughtful approach. One should not leap into conclusions as to what happened based on what little information he has with him or her, but generate several theories of the crime, keeping the ones that have not been crossed out by incoming information at the scene. Reasonable inferences about what happened are produced from the scene and appearance and information from witnesses. These theories will help guide the investigator to document specific conditions and recognize valuable evidence. Documenting crime scene conditions can include immediately recording transient detail such as lighting (on/off), drapes (open/closed), weather, or furniture moved by medical teams. Certain evidences such as shoe prints or gunshot residue is fragile and if not collected immediately can be destroyed or lost. The scope of the investigation also extends to considerations of arguments which might be generated in this case (self-defense suicide) and documenting conditions which would support or refute these arguments. In addition, it is important to be able to recognize what should be present at a scene and what should not (victim's vehicle/wallet) such as objects which appear out of place (ski mask) which might...