Many of us enjoy watching crime scene investigation programs, but in the criminal justice system, forensic investigation is an essential field that requires candid observation and prodigious interpretation. In forensics it is difficult to blame someone without scientific data. For this reason, Larry K. Gaines, author of the textbook Criminal Justice in Action, explains the importance of blood spatter analysis. A specialist can learn a lot about violent crimes by examining where the blood fell at the scene, the size and consistency of the drops, and the pattern of the blood spatter (Gaines, 2011). Accordingly, a Blood Spatter Analysis article will be used to explain the research methodology used by the author to proceed certain investigations. Originally, the source used to discuss research methodologies and application for evaluating blood spatter evidence is Bloodstain Pattern Analysis with an Introduction to Crime Scene Reconstruction by Tom Bevel. In a brief explanation, the expert describes the involvement of criminal and forensic investigations. Additionally, The Blood Pattern Analysis explains a proven methodology that uses the scientific method and provides focus and structure to the analyst while conducting the analysis (Bevel, 2008). The scientific method is a form of quantitative data according to Peter B. Kraska, author of the textbook Criminal Justice and Criminology Research Methods. Quantitative data includes experiments, surveys/interviews, and non-reactive methods; each examined in detail, along with real-life examples of research into both the theory and practice of criminal justice (Kraska, 2008). A step further than the scientific method, bloodstain pattern analysis helps establish a key to finding the event... halfway through the paper... as it led to explaining the methodology of the scientific method and provides the proper framework of how blood spatter analysis works. Quantitative research has shown that using the methodology of the scientific method can help us get one step closer to identifying a homicide like the one explained in the video tutorial. Finally, Bevel's expert uniquely explained how the scientific method provides the analyst with a good source of help in identifying blood spatter analysis with different variables and valid information.Works CitedBevel, T. (2008) . Bloodstain pattern analysis with an introduction to crime scene reconstruction. New York: Taylor & Francis Group, LCC. Gaines, L. K. (2011). Criminal justice in action. Belmont, CA: Cengage Learning. Kraska, P. B. (2008). Criminal justice research methods and criminology. Boston: Pearson Education .