Crime Scene Investigator of a Crime Scene - Essay Example

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Middlebury College
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Homicide crime scene investigation is one of the critical police activities that primarily focus on carefully gathering leads and pieces of evidence that can be eventually used to know what happened. In the given case, there are various objects and trifles of crime indicators that must be collected without manipulations and subjected to comprehensive forensic analysis. The first material is the Black 9 mm semi-automatic gun under ice cream cooler. The fact that there is a dead victim in the scene and a bullet stuck on the back of the counter show a possible use of the gun. Ideally, it is only from a gun that bullet s can be shot hence the need to analyze and determine the fingerprints of the person who handled it.

The lottery ticket with smeared blood will also undergo fingerprint investigations since it is reasonable that someone within or without the scene had handled it (Fisher & Fisher, 2012). Other pieces of materials that will be analyzed for fingerprint include the casing by the glass store entry door because there is a possibility that the criminals dropped it on their way into the store or after they committed the offense (Geberth, 2015). Furthermore, there is the need to analyze the fingerprint details in the six pack of cold beer and half smoked a fresh cigarette since there is always a direct correlation between drug use and criminality. Therefore, the fingerprint information obtained from the cigarette can be used to follow up the track record of the individual to ascertain if he or she has a criminal history.

The crime scene investigation will involve a series of steps. The first step will include Prepare a Narrative of the Scene. At this stage, I will write notes that capture the entire story seen without any unnecessary speculations. The second step is to take a photograph of the crime scene (DuPre, 2013). The photography will entail recording the actual objects within the area as well as the dead person. I will then prepare a sketch of the crime scene. This process will be proceeded by conducting a detailed search in which I will gather even the minor details that can serve as links to the crime. I will use crime scene investigation intuition to collect any microparticle evidence such as hair and fibers (DuPre, 2013). The prices of evidence such as the Lottery Ticket, Black 9mm semi-automatic gun and a Fresh cigarette which would be subject to further analysis will be well collected (Fisher & Fisher, 2012). I will choose the packaging that is of the proper size for every piece of evidence. Each of the materials will be packaged separately, properly label, sealed, and documented. An assortment of clean, new paper bags and Ziploc bags will be used.

In the primary process of investigations, my team will have to evaluate physical evidence Possibilities. At this stage, the team will interrogate the materials within the scene to determine if the shooting was done within the room in which the dead person lies (Geberth, 2015). The clothes of the deceased person will also be subjected to a thorough forensic analysis to determine whether the body was moved to its current location or there had been no apparent contact as to warrant suspicion of having been relocated from the primary crime scene (DuPre, 2013). The traces of blood will be identified, marked and used to develop crime scene theories which are critical to understanding the possible scenarios of what happened to cause the death.

At the crime scene, there will be searches for fingerprints everywhere within the room and on objects. The first phase entails looking for patent and plastic prints which are often visible. The other step involves a blind search for invisible latent prints that require the use of reading equipment (Geberth, 2015). After identification, I will lift the identified fingerprints and mark them appropriately for further laboratory analysis. At the lab, I will compare the digital print with others. It is an elaborate process of carefully examining the characteristics of the fingerprints (Fisher & Fisher, 2012). I will use the Analysis, Comparison, Evaluation and Verification (ACE-V) procedure to conduct a comprehensive comparison of the prints gathered from the scene with a set of other known prints (Geberth, 2015). A supplementary fingerprint identification system called the Automated Fingerprint Identification System (AFIS) will be used to establishing matches between the collected fingerprints from the scene of the crime with others contained in a computer database.

With the absence of any real-time recording gadget such as a closed-circuit television that can provide footages of the crime scene, it is difficult to isolate between the criminal and mere witnesses. Therefore, within the concept of criminal justice, everyone in the scene including the first officer, the mother, and small child who have been mentioned as witnesses of the homicide will be all interrogated (Geberth, 2015). Based on the substance of their testimonies it will be possible to determine whether such accounts are merely those seen or an attempt to mislead the investigation team. Furthermore, the fingerprints and other bio-data of the people within the scene will be taken and stored for comparison with the forensic data obtained after analysis of materials collected from the scene (Geberth, 2015). A critical investigation of leads compared to information provided by the people within the scene will easily implicate them or prove their innocence.


DuPre, D. M. P. (2013). Homicide Investigation Field Guide. Elsevier Science & Technology.

Fisher, B. A., & Fisher, D. R. (2012). Techniques of crime scene investigation. crc Press.

Geberth, V. J. (2015). Practical homicide investigation: Tactics, procedures, and forensic techniques. Boca Raton: CRC Press.

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