Illinois Law Enforcement Training and Standards Board (ILETSB) Practice Exam

Which of the following methods is a systematic approach to conducting a crime scene search?

1. Random search

2. Spiral search

3. Immediate collection

4. Wait-and-see approach

The correct answer is: Spiral search

The spiral search method is a systematic approach to conducting a crime scene search that allows investigators to effectively cover the entire area while minimizing the risk of missing evidence. This technique involves starting from a central point and moving outward in a spiral pattern, or vice versa, ensuring that no part of the crime scene is overlooked. It is especially useful in cases where the scene is relatively open or when the evidence is distributed over a wide area. This method is advantageous because it enables the investigator to maintain a clear path and a logical order of progression, which is crucial for maintaining the integrity of the investigation. By following a systematic method like the spiral, the investigator can carefully document each section of the scene, thereby aiding in the proper collection and preservation of evidence. In contrast, the other methods presented may lack the systematic nature required for thorough evidence recovery. Random searching can lead to oversight of crucial evidence, while immediate collection may result in missing evidence that needs to be documented first. The wait-and-see approach can create opportunities for evidence to be contaminated or removed, ultimately compromising the integrity of the investigation. Thus, the spiral search is the most effective systematic method for conducting crime scene searches.