Methods of Crime Scene Investigation
CSI activities are classified as a science, forensic science. As such it follows a set of actions it is required to do so to reach a conclusion, which given this example would be the identity of they who committed the crime. These are the basic crime scene actions.
Securing the Scene
It is absolutely integral and invaluable to preserve the state of things at a crime scene. Doing this is not as simple as it sounds though. People gathering to gawk and watch whats going on pose a high risk to damage the scene. Though, you must not change the scene in any way, it will be integral in putting the puzzle together. When you first get to the scene, ask any other officials if anyone arrived before you did and if anything entered or left the scene. Something as simple as opening a door, or taking the corpse away from its spot it was found would be the difference of having evidence and not.
Any CSI knows a scene is 3 dimensional. Meaning, that all and not just one aspect needs o be reserved. This allows you the capacity to approach a solution in many different ways when you have everything assembled. Evidence authenticity is lost with each and every change made to the scene.
Examining the Scene
It is indeed tedious, and very long, but this initial step and process is the foundation for everything else that comes after, and being thorough will benefit you immensely. Doing things properly, would include multiple rechecks, and absolute, complete documentation of the evidence.
First step in the process is to create a sketch. Important physical features could be included in this. This will make the interpretation of the evidence, in reference to the geography in relation to evidence easier to interpret.
Move then, next, to the persons body. Gather detailed info about everything you see. Type of clothing, contusions, other injuries; all of it is important. It wold indicate if there was any struggle or not, or possibly where the victim died.
Interviews and Testimonies
Onlookers can be shown to be quite the aggravation. Take this chance though to gather testimonials from onlookers. Maybe one of them was able to get a glimpse of the perpetrator as they fled the scene. If any have seen anything, you could get a description of them from them. Always approach as a skeptic, but be hopeful that something comes out of it.
Photographic Evidence
This should start right away as soon as you get to the scene. Its important documenting every step. It will also guarantee you catch the scene before any possible alterations can be applied to it. Each point of entry must also be photographed. Doing this makes it a possibility to find out how the criminal gained access to the scene. Items that can be construed as evidence must be photo documented as well, to best facilitate a correct outcome.
Analyzing and Interpreting Evidence
This is the hardest, and last step. This will be a side by side, and multi directional comparison of every last bit of evidence from start to finish of the investigation. Some things, such a sprints, will require analysis in a lab setting, and this is one of the things decided at this point.
