Forensics is the study of science in correlation with our legal system. This subject covers many different topics such as how to perform an autopsy and establish a cause of death, toxicology (the presence of drugs or alcohol in the human system), odontology (the study of dental records), and many more. Forensics helps criminal investigators and law enforcement officials trace what happened during a crime, what time the crime may have taken place, how a victim died, and also assists them in finding a possible suspect or suspects. The use of forensics is absolutely invaluable when it comes to fighting crime. This topic involves a thorough knowledge of science and biology, which is combined with the subject of crime and how the two are related in the field of forensics. Television shows such as CSI are a prime example of how forensics is used today in helping to solve crimes.