Forensic science is misleading because it suggests that only one type of science is involved, but this is not the case. Forensic investigations can involve virtually any field of science and technology. There are many steps to take when conducting a criminal investigation and investigating a crime scene. First, investigators must try to understand why and how a crime was committed. They examine the crime scene for information or clues such as fingerprints, weapons and DNA. They investigate the history of victims to define why someone would want to harm them. After forming a hypothesis, they try to find evidence that someone committed a crime so they can arrest the suspects. They examine both the cause and the hard evidence of the crime and try to see if their hypothesis makes sense. Suspects then enter the criminal justice system where they are tried using evidence collected at the crime scene. Forensic investigations require the skills of specially trained scientists, police, engineers, doctors and others. “These investigators look at all kinds of evidence, from weapons to bloodstains and from computers to bugs” (Erzinclioglu 5). The more evidence against a person, the greater the chance of conviction. Homicide detectives usually work in pairs and approach the crime scene by asking five basic questions: Did the death occur at the crime scene or elsewhere? Was there any attempt to tamper with the crime scene? Does the scene indicate any particular activity such as drug abuse or burglary? Is the cause of death obvious? Are there sufficient clues indicating how the death occurred? “Scene processing is the practical term for the series of steps taken to investigate a crime scene. Although the methods and... the central part of the paper... manage to improve the image by improving the contrast, or the difference in color concentrations. Changing the brightness or opacity of the image. Increasing the resolution and making the image sharper or blurrier. Fingerprints are a guaranteed method of identification because each person's fingertips are unique and fingerprints do not change over the course of a person's life. Fingerprint ridges appear in three types of patterns; loops, spirals and arcs. The most collective type of fingerprint pattern, the loops start on one side of the fingertip, double back and exit on the same side. Spirals are the second most common type of fingerprint pattern. They form a circular pattern that sometimes resembles a dartboard on a dartboard. Arcs are less common than rings and spirals. They form a wavy pattern that starts on one side of the fingertip and ends on the other.